My 2c is that Canon might have too many DSLR lines to differentiate, and might want to cancel one of them. I mean, how many ways can Canon slice features like AF, DPAF, and SD vs. CF cards?
Looking at it another way, Canon is about to finish upgrading all it's super teles, after which it probably plans not to upgrade again for 20 more years. Canon will probably need to push out a 24MP APS-C sensor soon. I doubt the super teles can resolve a lot more than 24MP on APS-C. So, if Canon released a 7DmkII with a 24MP sensor, the same issue would rise with the lower lines - can't raise resolution, so what differentiates the lower lines?
So my guess Canon is going to eliminate a line of cameras, maybe merging the xxD & 7D lines.