Yes, it's definitely speculation. However, if you think about the new display w/ the magsafe connector and iSight camera, you can assume that they could easily refresh the Mini to work w/ that display and minimize connections. At that point, it also becomes close to the AppleTV.
Speaking of AppleTV, I just hacked it w/ Boxee. Now it can run XMBC and Hulu. It even has connections to run CBS's shows, including REALLY old shows, like Beauty and the Beast w/ Ron Pearlman, and Comedy Central. VERY well done, I've even run it on my Mac. Easy hack, the hardest part is finding a USB stick that's bootable.