One of PlayStation Home's biggest drawbacks to date has been that it's so...disconnected from the rest of the console. Making it an impractical thing. Home v1.3 is looking to change that.
As we liveblogged, sometime this "fall", Home will be upgraded to v1.3, and with that upgrade a host of changes will be made to the social service. Chief amongst those will be the ability for people to launch any PlayStation 3 game from within the program (currently only a few titles support this).