There was nothing that could be considered ultra wide angle...
Did you have a look at micro four thirds? There's the Panasonic 7-14mm and the Olympus 9-18mm. Although neither are cheap, so you'd have to be really comitted to buy one.
I've done a complete 180 on this. I like mirrorless cameras, and a few months ago I would have happily joined into the "Canon must release a mirrorless camera or the sky will fall down" brigade. And if you look at the camera sales outside of the US, mirrorless cameras are making up a noticeable and growing percentage of sales. I think that even in the US, there is a growing interest in smaller cameras.
But now I'm thinking, who really cares if Canon doesn't release one? There's enough variety out there already. If they released one with EF & EF-S compatibility - great! But otherwise, nobody needs a "Canon" mirrorless camera. If Canon believe that their R & D budget is better spent on DSLRs and associated lenses and that their efforts shouldn't be diluted across a range of products, I'm not going to second guess them. I'd much rather have them do one thing well than several things at an average level.