Maybe I'm too close to MS (my posting history here indicates that may be so), but these two sentences really struck me as arrogant and dismissive. What has the OS software division in MS, who delivered Vista in November 2006 got to do with a hardware team shipping a new product, probably in 2010? How does Vista's poor reception hobble them? It doesn't even seem to be hobbling the Windows 7 (AKA the Vista do-over) push. How exactly would that "hobbling" work, shortage of funds due to poor sales of Vista? I didn't hear of MS being that short or R&D funds.
Do MS have history of vaporous hardware announcements?
A pre-announcement must serve some purpose. With an OS or hardware launch, it is probably advance warning to get third parties on board to create compatible software. Does this seem to be the case? Either that or there's a leak due to the increasing number of people who know about the product as it gets nearer mass manufacturing and retail.