According to writer/director Ragnar Tornquist in an interview with Eurogamer, ”We have actually begun not only design work but art work on content that’s due after launch that has been planned from the get-go… The second you start playing The Secret World you’ll actually see hints at where the content is going and what it’s going to be. And we really wanted to get a head start of that. We have content, a significant amount we’re planning to release after launch. How long that’s going to take is really hard to say - it really depends on what players want. But yeah, it’s ready to go!
Tornquist then promised, ”We have plans for seven years after launch for both the content and the story and of course cool new features as well. The game is just starting when we launch.”
Tornquist was also questioned about the possibility of mounts, which Tornquist was evasive in answering: ”Whether or not we’re going to do (mounts) at launch - we haven’t really announced anything yet. The function of mounts is as an aid to travel, and that’s something we cover in the game.”
”We have a challenge with a game set in a contemporary setting,” he added. ”Riding a dragon is really cool, and in our game there is definitely potential for dragons - but do we want players to ride dragons through London? That would be a little harder to explain!
“So we have a challenge in terms of believability. We really want to be believable; we want people to buy into our setting.”
To answer his question: riding a dragon in modern London would be awesome.