So gate 41 is completely blocked by this construction going on. Gate 41 is the first gate on the left that you'll see after getting through security, and a million years ago it used to serve Northwest but more recently has been given/sub-leased to Frontier airlines.
It looks like the construction is going to take up half of that gate area. Which would make for a ridiculously small SkyClub, if that's really what it is. Maybe it's the airside connector that people are speculating about in earlier comments. Maybe the downstairs is just a stairway / lounge dragon entrance and a real, hopefully more sizable, SkyClub will go upstairs.
Has anyone actually seen real plans for the new SkyClub space?