The Secret World's advancement system is that if your build works early on you can wind up with loads of AP and nothing to spend it on. That's part of what Augments are designed to fix. The latest game director's letter discusses the Augment system, explaining that Augments are collected via Scenarios and can be used at significant AP cost to learn new skills. Players attach those skills to active abilities, some of which enhance a specific ability and some of which enhance your character overall.
That's hardly the only thing in development at the moment, however. Issue #8's exploration of Venice and Issue #9's Tokyo adventure are both well on the way to completion, both replete with new challenges for players to explore. There are also plans for a new event starting tomorrow that pits players against one of Gaia's natural defense mechanisms rampaging across the globe. Whether you prefer the high-end challenges of The Secret World or prefer more casual play, there's plenty on the table for anyone.