They've announced SD40-2s, SD40T-2s, and SD45-2s, with and without sound. The later two models have previously existed, excepting the sound feature. I don't know why people are quite so standoffish about the SD40-2s considering that if you're familiar with the other two you can have a pretty good idea of what sort of model it will be.
I do not recall them announcing straight '40s, only dash-2s.