Yeah, the emphasis shifted to STEM right along with the creation of the IDC, so probably about six years ago. I commissioned in '07, and that was definitely before they were looking for STEM degrees as much as they are now. I don't remember it being mentioned at all when I was talking to the recruiter. I'd say it hasn't affected 1st tour Intel Officers at all, in that they're generally still going to do a squadron AI tour, a FID tour, or be stuck on the ONI watch floor. It's probably opened up some opportunities for 2nd tour Intel O's at Tenth Fleet/CYBERCOM, if that's what they're interested in, but I think the effects are more on the mid-career or more senior 1830s who have to go to a NIOC or something and do cryppie stuff in order to advance their careers.
I do think that the focus on STEM is a little shortsighted in that intel, as opposed to the rest of the IDC, is going to be an area that attracts the history and political science majors, and there's no compelling reason to make it relatively harder for them to get selected for intel. They're preemptively eliminating smart people who are interested in being Intel Officers.