Update (11/19): It's out now on Xbox 360 and within 24 hours on PS3 and is completely free. Original story and details below.
Original Report (10/28): Rockstar is feeling confident enough about GTA Online that they are introducing new content and it's coming sooner than you think.
In a report by IGN, Rockstar has revealed that in early November a new Beach Bum pack will be available for download. The pack includes new beach themed vehicles as well as new weapons, tattoos, and hairstyles to be used in both online and story modes.
Rockstar also details additional modes the including new jobs like "Gang Attacks, Survivals, Last Team Standing, Parachutes, Deathmatches, and Races." Additional jobs to play around with is a welcomed addition as some missions tend to rear their head more than others.
To provide players with even more diversity in missions, Rockstar also revealed the Content Creator will be going live soon as well. This gives the user the ability to create interesting jobs to perform. Rockstar will be putting "Rockstar Verified" on the most impressive creations giving players some street cred.
These downloads will be free of charge and coming very soon. Hopefully in much smoother fashion then the initial launch of online features.