While I can't find an authoritative reference (ie. from manufacturers), there is a definitive "yes" around the internet.
There are many posts on many forums confirming that 1156/1155/1150 are compatible. Examples at: overclock.net, Tom's Hardware, guru3d.
What I noticed myself when Haswell first came out: existing coolers (such as the Noctua NH-D14, as an example) had their specification details updated to include 1150, but they're still the same cooler.
And, if you accept an unreferenced statement on Wikipedia as a reference :o, the socket 1150 entry says:
Cooling systems for LGA 1155 and LGA 1156 sockets are compatible with
LGA 1150, due to them having the same distance of 75 mm between each