The ninth data release of the Sloan Digital Sky Survey - SDSS DR9 - was yesterday.
Here are some fun facts:
Sky coverage 14,555 square degrees
Catalog objects 932,891,133
Galaxy spectra 1,457,002
Quasar spectra 228,468
Star spectra 668,054
Most of what's new is the spectra, "more than 800,000 new galaxy, quasar and stellar spectra" in fact. This is due, in part, to BOSS (Baryon Oscillation Spectroscopic Survey); the replacement of the original SDSS spectrographs with the new BOSS ones means most of the new spectra are of considerably higher quality than those in DR8. However, there are other notable changes, from DR8, including the fixing of an astrometric error, and a new SSPP (SEGUE Stellar Parameters Pipeline).