Earlier quoted context omitted.
While I laud your transparency, I lament the chilling effect this will have on existing libraries like JQTouch. jQuery Mobile isn't available today but this announcement will make a lot of people sit on their hands waiting to see how things play out in the hope that they won't invest in a dead-end platform. Oh well, not saying you shouldn't have chosen this path, just pointing out the consequences...
jQTouch has been out for a couple years at this point - a two month "chill" period before release seems totally appropriate. Honestly, I don't see the "chill" as being a bad thing in this regard: jQTouch and Sencha Touch are doing mobile web development a great disservice by only supporting the latest-and-greatest WebKit platforms. If we can get developers to actually think about supporting more of the mobile platfor…
How is focusing on the future doing a disservice to anyone? We're at the very beginning of the mobile-optimized web, and the future is still unclear. There's still room to define it. Supporting the equivalent of IE6 on mobile devices seems like a waste of time to me, especially after we've just spent a decade watching the evolution of the desktop web be stunted by obsessive focus on backwards/cross compatibility.
Also, nearly all major device manufacturers have committed to using WebKit. In five years, how many mobile devices will not run WebKit? If Windows Phone 7 isn't dead by then, it might be the only one.