Lara LaBarwrote a review of Brooks Cascadia 11 Trail Running Shoe - Women's on June 16, 2016
Familiarity: I've used it once or twice and have initial impressions
Like everyone else devoted to the Cascadia 10s, I went through them fast. Excitedly bought a pair of the 11s and found myself with a different shoe entirely.
Two biggest differences-- a whole bunch of reinforcements have been added, which I'm sure helps with durability, but makes it a very different shoe. The 10s weren't ultralight by any means, but these are definitely heavier and don't breathe as well.
Second difference, and the dealbreaker for me, is that the last on the 11s has been narrowed significantly. They feel narrower than all the Adidas shoes I've ever tried on, which is my personal benchmark for what a narrow running shoe feels like-- too narrow for my slightly-more-than medium width feet. Your mileage may vary-- I did read a magazine review that said it was only problematic for people with "fat feet." (Hmph.) Had to return. Bummed. The hunt continues.