The new listings are for Bioshock Remastered, Bioshock 2 Remastered, Bioshock Infinite: The Complete Edition, and Bioshock: The Collection. All four listings are for the Switch, but there are no dates associated with them at this point. Separate listings could mean that players will be able to purchase individual titles as well as the complete collection.
At time of writing there's no official confirmation from either 2K or Nintendo, but a new release seems pretty likely. Not only are more and more major third-party franchises making their way to the Switch, but games like Overwatch suggest that there's a home for FPS players on the platform, too. And with Bioshock 3 in the works, any opportunity to introduce new players to the series seems a good idea.