I find this 1.3 to full frame transition to be ridicules. Think about the amount of sports photographers that have invested in thousands of pounds worth of lenses with the 1.3 crop in mind. It would really frustrate a regular user that in mind know his or her mm's. I can't see this rumour coming to life.
This isn't an issue - to the best of my knowledge, EF-S lenses won't fit the 1.3 crop 1D.
Even if they did fit, the sort of lenses professional sports photographers use are EF mount L type. which they can just go on using.