If you're into Prog Rock (specifically new-prog) there's always incredible gems being released, but pretty much none of them will ever be heard because they are nothing like modern popular music, but they also seem to be rejected by a big chunk of the classic prog lovers.
My favs from the year:
The Custodian - Necessary Wasted Time
The Dear Hunter - Migrant (the B sides are the best part in my oppinion, and their massive back catalog is unreal)
K Sera - Collisions and Near Misses
Come to think of it, 2012 was a much bigger year for prog rock
Anathema - Weather Systems
Gazpacho - March of Ghosts
The Pineapple Thief - All the wars
Swans - The Seer (this album is more of an 'experience' than music, though it really is a masterpiece. It will give you very deep and bizzare feelings)
Non prog music from 2013:
City and Colour - The Hurry and The Harm (I'm Canadian).
Sound City - Real to Reel (there's some real duds, but there are a few great jems)
Portugal. The Man - Evil Friends (not their strongest album, but Danger Mouse was involved in this one so if you like his work it's more than worth a look)