One of my better sources of information has finally let me know what’s going on with the 1D4 announcement.
The magical date? The “end of January”.
This was also corroborated by a few other sources.
This is not a hard release timeframe, if issues arise with the camera, it could be delayed. No press conference or official showing has been set yet.
Specs [CR1] (the consensus from various places)
1080p Video (24p/25p 30p 60p)
Apparently this camera is the most locked down product in Canon’s history as far as who really know what’s going on with it.