I think in order for this to occur, there would have to be a clear ruling on the definition of "militia" in which they tie it directly to "combat personnel", because, as has been mentioned, there are already females serving in the military.
Do you people even read? The Militia (the one in the Constitution -- e.g. the un-organized militia) has NOTHING to do with the military (e.g. the standing army or the organized militia) in any way shape or form.