Previously canned DLCs for Bioshock 2 will be arrive on PC after all. That's what "2K Elizabeth" has said over here. The post reads: "I have some good news concerning the BioShock 2 PC patch as well as the development of Protector Trials and Minerva's Den for the PC. Not to keep you in suspense any longer, I'll sum it up with one sentence: We have resumed development on all three and they will be coming to PC."
It also looks like the patch and the Protector Trials will be due roughly December time and they will be free. This is: Good News.