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Microsoft Developing Next Mobile OS: Crossbow

Successor to Windows Mobile 5.0 will feature built-in IM, strong links with Office 2007.

Microsoft, which has been carving a larger slice of the mobile device OS market, is developing a new product, code-named "Crossbow," which will incorporate features such as instant messaging, a Microsoft executive confirmed Monday.

Crossbow will have strong links with Office 2007 and Exchange 12, Microsoft's pending new office application suite and e-mail server, said Pieter Knook, senior vice president for the mobile devices and telecoms sector. Crossbow would be the successor to Windows Mobile 5.0, released in May 2005.

Crossbow will take aim at the Symbian and BlackBerry operating systems. The OS will contain a new mobile version of Office Communicator, an Office 2007 enterprise communications application, that includes instant messaging on public and private networks, Knook said.

"As the Office [2007] PC versions of those applications improve, we're tracking that on the Windows Mobile side," Knook said.

Coming Soon?

Knook said it's premature to say when Crossbow would be released, but that the company plans for an annual mobile OS release. Mobile operating systems are also complex since operators often must be tested to ensure their systems can work with a new OS, a six- to 12-month delay after a release, Knook said.

That process is nearly complete for the push e-mail capability of Windows Mobile 5.0, Microsoft's slow assault against BlackBerry e-mail that may now start to bear fruit. The company's new push e-mail capability depended on software upgrades on the telecom operators' side, as well as new versions of Exchange Server 2003 and Windows Mobile 5.0.

Those upgrades are nearly complete, Knook said. "You're getting to the point right now where this quarter is really where the whole offer comes together," he said.

Microsoft is hoping to nudge BlackBerry aside on costs and convenience for administrators. Knook estimates an enterprise deploying mobile e-mail with 20,000 users could save $1.5 million in software purchases alone, plus additional costs on licensing over BlackBerry, he said.

Microsoft is counting on strong connections with device manufacturers to strengthen its position with those enterprises already using Exchange but with a BlackBerry server. The new push e-mail feature would enable those companies to eliminate the BlackBerry middleware, which also consolidates their support structure, Knook said.

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