Well, I've just been to my local photograhic shop and they are doing a deal on the 5D II (body only) and the 5D II with 24-105 L IS USM. In both cases they are including a free BG-E6 grip.
At least two UK firms are doing free grip with any 5DII (inc 24-70 2.
Either a seasonal offer to boost sales or sign of announcement of replacement.
Only time will tell.