Pour ceux qui peuvent attendre un peu : canonrumors [CR2] ("good rumor from known source")
One of the lenses will be the 14-24 f/2.8L, that will complete Canon’s run of lenses covering 14mm to 560mm.
The other will be a replacement to both the 16-35 f/2.8L II and the 17-40 f/4L. We’re told one of the configurations in test is an EF 16-50 f/4L IS.
At least one of them could be announced in Q4 of 2013.