Release document (Jan 2014) here.

Please reference this paper when using the data: McCracken et al. 2012, A&A, 544, A156.

And please include this text in your paper:

Based on data products from observations made with ESO Telescopes at the La Silla Paranal Observatory under ESO programme ID 179.A-2005 and on data prod- ucts produced by TERAPIX and the Cambridge Astronomy Survey Unit on behalf of the UltraVISTA consortium."

Data files and basic catalogues

Advanced catalogues (not ready yet)

The full data release can also be obtained at the ESO website. This website is accessible to astronomers world-wide. The website is:
In the "Data files/" release page link above you can find a unix script called rename.unix which renames the ESO archive filenames into the original ultravista filenames