I'm kinda curious to hear how Dimension W will turn out. Not a big Yoshiaki Fujisawa fan so I hope there's more Go Shiina at least.
And more Michiru Oshima!
They're gonna release a soundtrack after the 2nd season ends ... right? ç_ç
EDIT: Satoru Kosaki is credited for
Koyomimonogatari which is technically "airing" in Winter. I'm guessing they're just reusing his old music since they're short stories set in between the others.