Final Fantasy XIV [official site] may have launched in a sorry state, but I’ve heard good things from MMOers since its revamped relaunch with the A Realm Reborn subtitle. A big ole chunk of newsness is coming in June with the first expansion, Heavensward, and you can have an in-engine peek at that now running on your own computer thanks to a new benchmarking tool.
The free Heavensward benchmark will run through a few scenes showing off new things in Heavensward. It also includes the character creator so you can play with the new race in advance, and save your toons to use in the full release. Two months is about how long I need to perfect characters I create anyway.