I have to say... I am about to sell either my 17F4.0L TS or 8-15L and stuff to get this camera (lenses I hardly use). Just a few weeks ago I was thinking about how to get money for two additional 600ex rt´s (in addition to the three I have), and I got sidewinded (if that is the correct word) by this anouncement. I have to have it, and it will be the only camera I have in addition to my 1Dx. The only complaint I have (and that is a minor one...) is that it has not got built in radio triggering capabilities for the 600´s (and the others to come).