Just arrived back at Pop and took a walk around. As we already knew, Buildings 4, 5, 6, 7, 8, 9 and 10 are completely refurbished and open for occupancy. Building 3 appears completely closed and under renovation. Some rooms, particularly one half of the lake view rooms, appear nearly complete.
Building 2 appears fully open to guests with old style, unrenovated rooms. In a surprise move, though, sections of Building 1 are now closed for renovation, including all pool view rooms. It appeared that at least some rooms on the parking lot side of Building 1 were still occupied and unrenovated.
So, in summary, if you are traveling soon and want a refurbished room, and/or to be away from construction, you want to request 60s, 70s, 80s, or 90s. If you want an unrenovated, old style room, request 50s and specifically Building 2 as some renovated rooms in Building 3 of the 50s may open soon.