Canon announced two wide angle lenses in May and their list prices are surprisingly 'cheap.' The EF 16-35mm f/4L IS is what I am interested in and with a 4 stop IS system, it may find a place in my equipment bag.
You can see images taken with the EF-S 10-18mm f/4.5-5.6 IS and EF 16-35mm f/4L IS lens on Canon's China website. You can see the video review of the EF 16-35mm f/4L lens here. I am not enamored of the EF-S 10-18mm len's speed and will not be interested in this glass but it is available in camera stores now and you can see the video review above.