No Minerva's Den and Protector's Trials DLC for PC version of Bioshock 2
This development was confirmed on the official 2K forum giving the reason as timing and technical issue, they also added that they are currently working on a patch update to resolve some of the issue in Xbox 360 and PS3 version of the game.
Here is what 2K official forum reads:
“I have an update on the status of patches for BioShock 2 and some answers to questions on features that have been outstanding for a while,” said Tobey. “We will not be adding vending machine sounds into any version of BioShock 2 and we will not be adding playlists for the multiplayer DLC maps – we did look in to both options but due to technical and timing issues, these two fixes are not feasible.
“We are planning patches for the 360 and PS3 to fix some functionality issues, but they will not drastically change gameplay (and I’ll post the patch notes when I get them – these two items are still in with QA.)
“We will also not be offering Protector Trials and Minerva’s Den on the PC in the future – and I want to say that I’m sorry for the disappointment this will cause to PC players out there. As always, if any of these issues change in the future, I will update you guys first, but at this point in time I don’t want to make you wait any longer and these are the most definite answers I have and you guys should deem them final decisions.”