updated 11:25 pm EDT, Thu November 3, 2011
Canon EOS concept with 4K video shown at event
Mentioning it just at the end of the unveiling of the EOS C300, Canon has shown an early prototype of an upcoming pro DSLR with record-setting video. The unnamed prototype would have a full-frame CMOS sensor and could shoot 4K (usually 4096x2160) video at 24FPS when using Motion JPEG. Very little else was mentioned, although it had the same red "C" badge from the C300 that denoted the Cinema badge.
Superficially, the camera looks very similar to the new EOS-1D X, although Canon won't show the back. The current flagship is capped at 1080p and may need more than the dual-core processor inside to process 4K, which produces four times more data.
The DSLR is ultimately intended as a production model. Canon wasn't ready to commit to a price, ship date, or other features, a likely sign that it won't show until sometime in 2012 at the earliest.