The next version of Office moved a step closer to reality on Monday as Microsoft released an invitation-only technical preview of Office 2010.

However, the release of the software will be limited. Attendees of this week's Worldwide Partner Conference in New Orleans, as well as the recent TechEd show, will gain access to the desktop versions of Office 2010. Microsoft has also been taking sign-ups via its Office 2010: The Movie teaser Web site.

Also, it won't show off the program's biggest change--the addition of browser-based versions of Excel, PowerPoint, Word, and OneNote.

Those so-called Office Web Applications are being demonstrated on Monday, but the technical preview of the Web apps won't come until later this year. For consumers, Microsoft plans to make the browser-based versions a free part of Windows Live next year, but hasn't decided whether they will include advertising.

The applications, which run in Safari, Firefox, and Internet Explorer, are aimed at both expanding the number of Office users within businesses as well as holding the ground threatened by Google Docs and other Web-based productivity programs.

On the desktop side, Microsoft plans a broader beta of the software later this year, with a final release in the first half of 2010.

Much of what is in the technical preview of Office 2010 is not a shocker, given that a test version of the software leaked onto the Web earlier this year, although Microsoft is offering further details on what's in the product as well as how it plans to sell the new software.

In its last update to Office--Office 2007--Microsoft introduced entirely new XML file formats and a major shift in its interface to use a "ribbon" that shifts commands based on what the user is doing. Office 2010 is a set of less jarring changes, with Microsoft saying the goal was to make the basics better.

Office 2010 sticks with the ribbon motif, expanding it to include many of the Office components that didn't get the interface the last time around. Office 2010 will also come in both 32-bit and 64-bit versions--a first for Office.

Word gets a collection of cool image effects that stem from the DaVinci Imaging Engine that was part of Microsoft's now-discontinued Digital Image Suite product. Word, as well as the other programs, gets a new "paste preview" tool that lets users hover over different paste options and see what their paste will look like before accepting that selection.

Excel gets a new feature called Sparklines, which are tiny graphs that can fit in a single cell of a spreadsheet. PowerPoint picks up video editing features as well as the ability to create a video of one's presentation, including voice annotations.

The Outlook e-mail and calendar program adds a conversation view feature, a la Gmail. Microsoft's feature goes further though, offering an "ignore thread" option which keeps a user from having to see a message string they are no longer interested in being a part of. It also has a "MailTips" feature that offers etiquette and security alerts before doing things as replying to a large group or sending a document outside the firewall.

To handle file tasks like saving and printing across Office, Microsoft has added a "backstage view" to each of the applications. It has also made it possible for multiple people to work on the same document simultaneously through co-authoring tools.

Microsoft is also simplifying the number of different Office bundles it sells. There will be three consumer versions. Office Home and Student comes with OneNote, Word, Excel, and PowerPoint. Office Home and Business adds Outlook to the mix, while Office Professional includes all that, plus the Access database and Publisher page-layout programs.

On the business side, Microsoft Office Standard, the standard package for volume licensing customers, includes Excel, Outlook, PowerPoint, Word, OneNote, and Publisher, with the last two applications being new additions to that edition. Licensing Office Standard also gives businesses the ability to host the browser-based versions of the software. The Professional Plus version adds Access, InfoPath, SharePoint Workspace (formerly Groove), and the Microsoft Communicator instant-messaging program.

Microsoft has yet to announce pricing for any of the products.

Microsoft's internal data credits the launch of its new Bing search engine with an 8 percent boost in unique visitors during June.

It's been clear for a while that Bing's launch produced gains for Microsoft during its initial month, but the degree to which that gain was produced by those strolling by as a lark or by those actually using the service daily was unclear. Microsoft released data Monday claiming an 8 percent gain in unique users during the month, and said "based on our own polling, we have also seen the number of people 'likely to recommend' Bing double in our debut month."

Microsoft relaunched its search engine business in early June with the introduction of Bing. The company confirmed that the data outlined above refers to June 2009 as compared to May 2009, prior to the launch of the new service.

Three times as much traffic landed on Bing Shopping during the month, and Bing Travel has increased its traffic by 90 percent. Advertisers also saw some gains, according to Microsoft; a "large wireless communications company" enjoyed a 28 percent increase in clicks in the Bing era.

The steady drip-drip of data points regarding Bing's market share has been a bit over the top--Statscounter twice issued press releases based on day-to-day estimates of traffic--but it's pretty safe to say that the launch has gone well for Microsoft. How well? Data from companies like Compete and Hitwise point to only very small gains, according to Search Engine Land, which believes the real evidence of Bing's staying power will come once the summer vacation period ends and overall search queries rise.

Essentially, nothing has changed, said Google's Andy Rubin at a press conference Friday morning highlighting Google and T-Mobile's partnership on the launch of the new MyTouch 3G smartphone. "You need different technology for different products," Rubin said, explaining that Google's approach to product development means that projects that might overlap aren't necessarily scuttled to protect the one that got there first.

Android is first and foremost a smartphone operating system, found on products such as the new MyTouch, the older G1, and others scattered around the world. But companies such as Acer and Asus are planning to put Android on Netbooks later this year, and several others are rumored to be following suit.

Chrome OS, however, is supposedly going to arrive on Netbooks first when it's scheduled to be ready in the second half of 2010. So how should companies thinking about alternatives to Windows on Netbooks navigate about Google's operating system strategy?

Google's blog post announcing Chrome OS acknowledged the overlap. "Android was designed from the beginning to work across a variety of devices from phones to set-top boxes to Netbooks. Google Chrome OS is being created for people who spend most of their time on the Web, and is being designed to power computers ranging from small Netbooks to full-size desktop systems."

After a panel discussion, Rubin declined to get into specifics about how Android and Chrome would be presented to Google partners once both are on the market. But during the discussion he noted that Android is capable of handling complicated, specialized tasks that a browser-based OS may not be able to tackle.

For example, Android handles the complicated process of handing off an Internet connection between cell towers as you drive down the highway, and carefully manages the power consumption of the system to extent the battery, Rubin said.

Google is also planning to make social-networking technologies a big part of a future Android release, he said. Google just released Android 1.5, known as Cupcake, and plans to keep the sweet desert theme going into the future with code names such as Donut, Eclair, and eventually Flan, but Rubin didn't specify which release will introduce heavier integration with social technologies.

And work continues on making Android suitable for things like set-top boxes and even refrigerators, Rubin said. "Our team is working hard to define those profiles. We've done a good job defining those profiles for cell phones."

But the Netbook situation remains murky. Is Google going to support two different operating systems for the mini-notebook market? As of yet, no Open Handset Alliance type of partnership exists for Chrome OS, meaning that unless that changes Google will have to do almost all the heavy lifting on Chrome development and support itself.