Dries Buytaert gives a rundown of what the future of Drupal looks like and what has been done so far, here: Drupal 2011 retrospective and 2012 predictions .
What's the key takeaway from this for me is that Drupal is going to
continue to grow and grow rapidly. Indeed I see it in more and more
sites online, and that adaption is likely to increase. Even IT people
not using Drupal should take a look at what Dries has to say and how it
might be something they will be working with soon.