I'm not sure they'll achieve much outside of being seen to be doing something. There was a meeting in Miami last year in about November, if I recall, where a group also got together and discussed it for a few days and basically said nothing new.
As far as I can tell, there is no standard for sex determination, because there is a continuum of conditions - even with AIS (which I believe is the case with Semenya), you get some women who it barely affects, others are affected a great deal (in terms of muscle development, secondary male characteristics). So what do you do? You can't ban them all. Or maybe you can. If that was the case, then sex determination would be done on the presence of a Y-chromosome. That's what they tried initially (in the 60s/70s), but it discriminated against those women with AIS who had no advantage.
So I can't see them coming up with anything that is useful or resolves the problem.
On Semenya, she does appear to have more body fat, but I would again be careful to judge on appearance only. Also, that might be that she's less trained, who knows? I am reasonably confident that the IAAF would have required some kind of medical treatment, and as I've said, if I had to guess, she'll get slower by a second or two for the next 3 or 4 years. Then again, it's a guess.
Ross