I didn't buy a lot of music this year, but here are some new and old releases I enjoyed:
Jack Dejohnette: Made in Chicago (ECM)
Roscoe Mitchell: Celebrating Fred Anderson (Nessa)
Michael Hurley: Fatboy Spring (Mississippi)
Wooden Joe Nicholas (American Music)
Barnes-Bocage Big Five (American Music)
Janacek: String Quartets 1 & 2 - Skampa Quartet (Supraphon)
Robert Schumann: String Quartets Op. 41 - Ysaye Quartet (Ysaye)
Borodin: Symphonies 1-3 - Tjeknavorian/National Phil. Orch (RCA)
edit - Oops, I didn't notice this was supposed to be strictly jazz acquisitions. Ah well ....