One of the most requested games any time a backwards compatibility wishlist comes up, Skate 3 is probably, finally going to be backwards compatible on the Xbox One. It is currently being advertised as backwards compatible on the Xbox 360 dashboard, so it's not a big leap to assume we only need to wait a day or two.
In addition to that, the DLC is currently on sale for the low, low price of free. If you've been waiting for the chance to jump back into Skate 3, it would seem there is no better time than now.