Unless that official, Keith Lorizio, Vice-president of U.S. Sales and Marketing at Microsoft, is counting both Windows Store and Desktop (Win 32) apps, I can't see how these missing 97,000 apps are going to materialize so quickly. (Desktop apps in Windows 8 can be listed and promoted in the Windows Store, but they cannot be purchased and downloaded directly from it, per Microsoft's orders.)
Lorizo told Beet.tv that Microsoft is "expecting to aggressively pursue 100,000-plus apps in the first three months" Windows 8 is available. He added that Microsoft is "putting millions of dollars against that effort."
Microsoft officials have said previously they are not going to allow Windows Phone apps (of which there are over 100,000) to be sold through the Windows Store. Developers can use their existing Windows Phone code to rebuild Windows 8 apps, but they cannot simply put an existing Windows Phone 7.x app in the Windows Store. Microsoft is not allowing this. And -- at least for now, the Windows Store and the Windows Phone Store (formerly known as the Windows Phone Marketplace) are two separate things.
I've asked Microsoft if Lorizio misspoke. If there's any further clarification around his remarks, I'll add it to this post. (See below.)
Microsoft isn't doing much to clarify what "counts" as Windows, as my ZDNet colleague Mary Branscombe noted recently. However, Windows 8 is not the same as Windows RT, which also is not the same as Windows Phone 8 OS. Microsoft's longer term goal is to make these as similar as possible so as to improve both the consumer and the developer experience. But not all Windows are created equal at this point. And not all "Windows" apps are, either....
Update: Received what's basically a no comment. “Per our usual policy, we aren’t making any predictions on adoption for Windows 8 before it hits the market," a spokesperson said via an e-mailed statement.