A wave 2 figure in the Generations line (with WFC Megatron), Darkmount is meant to homage the Gen1 comic character, Straxus (who never had a toy).

http://www.seibertron.com/transformers/news/official-inpackage-images-of-generations-darkmount/18972/

In these pics, we see more red and gold in the figure (earlier pictures seemed to be rather dominant with the blue. I'm now liking the look of this toy in these colours.

(Wave 3 has Red Alert and WFC Soundwave, while Dirge is expected for Wave 4)