In the interview with Engadget, Steven McArthur makes this claim:

Steven: We expect to have apps in the low tens of thousands by the launch of the Pre 3 and TouchPad. That's phase 1. We've got a massive footprint, we're committed to building the best tools for developers, and we're committed to putting in place the best marketing, and helping them drive their business programs.
I would love to know where/how he's getting these figures. I know they can't be coming from in-house (it's just not feasible); do they really expect there to be a surge of development in the next few weeks after the 2/9 announcement?