After a couple teaser images on Twitter the past few days all but confirming the news, SEGA finally dropped the announcement this morning on social media letting everyone know that Vanquish was officially coming to PC.
— SEGA (@SEGA) May 10, 2017
The game will be dropping on May 25, and you can already pre-order your copy via Steam today. It should be noted that the graphics have received a slight overhaul and are now in stunning 4K, and that this version will include everything that's been released for the game from special add-ons to all the DLC. So you're essentially getting the definitive edition with a spit polish.