This info has been released today by a contestant who auditioned and did not make it in Atlanta. His episode showed last night, and he feels free ( from certain stipulations in his contract) to share some things at this point.
This guy has dance connections with several of the contestants, and he made connections with several others. As a result, he was able to find out as of today - and share - the following contestants who have made the cut to the final 20:
Maylene (but not her partner who dropped Maleece last season)
That is not all of them, though. It seems that there are 6 ballroom, and at this point only 2 male hip-hop dancers.
There is only going to be one winner this season, and the viewing audience begins taking responsibility for who stays earlier - as in the final 10 or so.