Game Informer announced today that the cover will revealed on November 8th and the digital release will be available later that day. If you're subscribed to the physical copy, you should receive it some time between the 12th and the 17th. If you're not a subscriber, you can purchase a copy from news stands by the 16th.
The article will be 18 pages long and include lots of details and screens!
More ordering info (Including international orders) can be found here: http://www.gameinformer.com/b/news/archive/2012/10/26/december-issue-featuring-gta-v-to-launch-digitally-on-november-8.aspx