I'm sure everyone and their mother remembers the coolness of G.I. Joe. Coming soon, we can expect the release of a live-action movie depicting our favorite Joes and their complimentary baddies. It don't really get more retro than that.
The next wave of news about the hype surrounding the Joes is that animated stuff is coming out too.
Hasbro (in interview at the 2008 G.I. Joe convention) is currently showing off a new 1 minute preview of a new animated G.I. Joe cartoon that will debut next year as web-episodes on Hasbro's G.I. Joe website. Each episode is planned to be about 5 minutes and is geared more towards adults then kids. The preview they recently showed is of Snake-Eyes saving Duke and Roadblock from a Cobra ambush in the jungle. Snake-Eyes is actually shown killing Cobra soldiers, though the actual killing is off-screen (you know those soldiers are dead).
Sounds pretty heavy. You can check out more info as and when needed at Toy News International.