Or you could just do what everyone else is doing and buy from third party vendors that provide better quality lenses. Tokina offers the best wide angle with their new 11-16, and its still cheaper than Canons. Tamron and Sigma now offer better quality APS-C lenses (including an 18-35 f/1.8 ), and both have significantly longer warranties (Sigma 4 years, Tamron 6 years). Moreover, Tamron's service is a guaranteed 3-day turnaround.
So, I guess the real question is, why bother waiting for Canon to release something that already exists? Sigma is being wildly inventive and offering up a lot of great lenses, Samyang/Rokinon has both a 14mm f/2.8 and 16mm f/2 lens that would be great as an APS-C prime in the 24mm range.
An update to the 17-55 only makes it more expensive, and its already the priciest APS-C lens. Likewise for the 10-22 (would you pay $800+ for one when you can get the Tokina for $550?). I was hoping Canon would release some EF-S primes, since other companies have, but its not looking likely