New
#141
Dunno what GA stands for, but it's the Retail release of Win10 on July 29th, the one that will be shipped digitally to Upgraders.
RTM is the version released to system manufactors (Dell, HP) so they can deploy them in new PCs. MS WILL update 10 between RTM and GA, so RTM is by no means complete, just has to be stable enough to install on PCS and run Windows Update.