After leaking once in September, then again in February, then in March, it appears the BioShock collection is ready to leak for real this time. While previous leaks came mostly from trademarks and retailers, today's news actually came from 2K's website, where the name appeared for a few minutes this afternoon before it was removed:
Coincidentally, 2K also started a Twitter account for BioShock today.
NeoGAF diggers have already found a bunch of photos from the upcoming BioShock collection, so it will likely get announced soon. Safe to say this will be a current-gen version of all three BioShock games, including the DLC (much of which, like BioShock 2's Minerva Den, is regarded very well). Also safe to say this is one of the worst-kept surprise announcements in recent history.