The New York Post, the BioShock creator is renegotiating his contract with Take-Two to allow more creative control over his projects and – this is the key – royalties (here called "points") "based on how much business the next installment of 'BioShock' and any other games that he develops produce."
Given we don't know exactly to what extent Levine will be working on BioShock sequels, if at all, it's pretty interesting to hear that Levine could be given royalties for a creating a concept, even without working on a project directly. As noted by Variety, we'd only imagine a few notable game icons with this much weight (e.g. Sid Meier, Will Wright).
This is all rumor at the moment, as neither Take Two's people or Levine's people are talking, but we're watching the re-negotiating (as are apparently the tabloids) closely.
[Via The Cut Scene]