UPDATE: The merge will happen on 11th July, Microsoft has confirmed to Eurogamer.
"All of the same content from GamesForWindows.com will be available on Xbox.com so members of communities across Xbox 360 and Games for Windows can purchase and get details on their favorite games, all in one place," explained a spokesperson.
"All account information will remain the same and community members can still take advantage of their Xbox Live profile in their Windows games and stay connected to friends who are playing on the PC."
ORIGINAL STORY: Microsoft is to merge Games For Windows Marketplace into Xbox.com.
According to the brief announcement on the Games For Windows site, its PC digital delivery store will be absorbed into its console hub "soon".
"Games for Windows Marketplace will fully transition over to Xbox.com. Now you can get all of your gaming needs in one place. Its convenient, its concentrated, and its a whole lot of great games," read the site.
Microsoft relaunched the service last October in an effort to turn the store into "a destination for games for PC gamers".
We're onto Microsoft now for more details on how, when and why the merge will go down.