One of the biggest things addressed, however, was a cloud save failure that caused vehicles and/or vehicle modifications to disappear.
Other issues addresses included exploits, a bug that duplicated personal vehicles, a freeze up that occurred during playlists, UI details, changes to the character creator and much more. Full details here (rockstargames.com).
Meanwhile, Rockstar asks that if users see any other technical glitches, they subscribe to the GTA Online Launch Status article. The company has also made available a Twitter page in which gamers can message the company.
GTA Online launched on October 1st, just a couple weeks after Grand Theft Auto 5 was made available.