Microsoft will officially close its Xbox.com PC Marketplace on August 22, 2013. According to this FAQ on Xbox.com, those who have purchased Games for Windows Live titles and DLC will still be able to play them through the service's client, but won't have access to any kind of marketplace to purchase additional content. Some are concerned that Games for Windows Live titles will be inadvertently pulled from other services such as Steam, but that is really up to the publishers, according to Microsoft.
For example, Insanely Twisted Shadow Planet developer Michel Gagne said via Twitter today that the game would continue to be available via Steam.
MS Points will also be going bye-bye - just like they are on Xbox Live:
"As part of the recent Xbox 360 system update, Microsoft Points will be retired and the Xbox.com PC Marketplace will be closed as of August 22, 2013," the FAQ reads. "We encourage you to spend your Microsoft Points balance prior to this change. Although you will not be able to purchase new games, you can continue to enjoy previously purchased content by downloading it through the Games for Windows Live client software as usual."
We will keep an eye out for any GFWL titles that experience hiccups after Microsoft makes its changes on August 22 and keep you posted.
Thanks to MaskedPixelante for the head's up on this story.