Yes, I work for Apple, haven't heard anything yet.
Personally, I think they might start moving the iMAC toward the pro.
Now that the iPHONE is touch screen, might make sense, even if a small portion of the screen was touch sensitive. However, keep in mind, the arm strain you would have after a while. The new iMACS if touch screen would have to be book like in design - sort or at a 30° angle, similar to a mixer.
What I would like to see.
° Two Hard Drives, use small notebook HD's if need be at 7200 RPM, or the second could be a 7200RPM note book HD.
° Faster GPU for FCP / Motion
° PCMIA slot similar to Macbook Pro
° Fastest CPU to date x 2. Basically a Macbook Pro but with a display, OR update the new MACBOOKS to 4 coresx2 (soon) and all Mac Pro's will be either 8 core or 16 core.
Go APPLE!
I also think there will be a mid range, with STRONG GPU machine under $1000, similar to mini, but with stronger GPU and FW 800 speeds. This will get all the gamers and home hobbyists (video) market share!