It appears the Canon EOS R1 is definitely in the hands of select photographers, undergoing…
Canon 1D X in late April?
It looks like, according to japanese site DC Watch Impress (Google translated here). In addition, the site claims that all the accessories for the 1D X will also be available in late April. «Delays in development» are the reason for the postponing (Canon Japan is cited as source). :-(
EDIT: check our PicDroid (click here) for the latest pics shot with a G1X and uploaded to Flickr.