It may be a review of
S. 941, which aims to reform some of the policies and procedures of the BATFE. Earlier versions passed by a comfortable majority in the House in two previous terms, but didn't make it in the Senate.
If not, I've got no idea as of yet. I sincerely doubt they'd be dumb enough to try and introduce new restrictions two months before the mid-terms. Then again, folks do some pretty dumb stuff.
If it's true reform of the regulatory process, it could be a good thing.
If it's an attempt at new restrictions, it will fail to pass, and it will generate public outcry, which would also be a good thing.
ETA: a Google search on the matter reveals nothing of substance, only the announcement of hearings. That doesn't seemed to have stopped a great deal of panic and sky-is-falling rhetoric, though.