Canon Rumors has new information about the possible EF 50mm f/1.4 replacement and the EF 24-70mm f/4L with image stabilization. Both lenses are rumored to be released soon (before end of 2012). Quoting:
Below is some unconfirmed information in regards to price and weight of the new EF 24-70 f/4L IS, rate it as [CR1] for now.
- EF 24-70 f/4L IS $849 and weighing 545g
- EF 50 f/1.4 IS $799As mentioned earlier, [...] confident about the new 24-70, but the 2nd lens, [...] not 100% sure on. There are so many coming down the pipeline.