Yes, the bike release will support speed, cadence and the speed/cadence combined sensors such as the GSC-10.
AntPlusBikeSpdCadCommonPcc will be extended, this one and any other bike files weren't meant to be visible in the current release and they have been changing, so don't write any code based off of them yet.
As for a schedule of a release date, it is currently in flux, so I can't give you a specific date. We are still working to finish by the end of the month, but it may slip a week or two with recent developments.