The 5D MkIV gets some major improvements, aimed at the video market and some nice, incremental upgrades of the still photographers:
http://shop.usa.canon.com/shop/en/ca...=&CID=1-S7G3ZG
I'm most excited about the update of the 24-105/f4 lens. The Series I version of this has been a workhorse in my kit since 2008. I looking forward to the optics upgrades, but really excited about a full 4-stops of IS. I hand hold at night a lot, and this'll be huge for me. See the release:
http://shop.usa.canon.com/shop/en/ca...=&CID=1-S7G3ZG
My ultra-wide is the incredible EF 14mm f/2.8L II USM, but if I didn't have that, I'd be thinking very hard about the EF 16-35mm f/2.8L III. This should be a stunning lens, covering the ultra-wide to wide zoom range. Not cheap, but it's very hard to make ultra-wide zooms with high IQ, but Canon has figured it out:
http://shop.usa.canon.com/shop/en/ca...=&CID=1-S7G3ZG