I had read that Juan would stay. For the unenlightened who described Juan as Tejano, it's actually an adult variety format ala Jack or Bob but with hits in Español. Simmons is doing Spanish sports on 1260 so 1490 would give them something to combo with.
The possibility of a combo is a good and valid observation. Juan is a computer run, jockless format that BMP's Jose Santos created for several markets and is indeed an adult hits format (that is the Arbitron designation) with songs from the 70's, 80's, 90's and some from the current decade.
It's cost efficient and can combo with ESPN in Spanish (which generates minimal numbers if any) to "bulk up" the buy.