Well with the upcoming campaign, there will probably be play opportunities, as well as there are play tests that come up during which the active community usually gets invited.
We had a community event back in mid October which they got to mess around with many of the new features. There are also community testers who get impromptu invites when we need help testing beyond what the team can do.
So there tend to be a few opportunities to see what we've been up to before we provide public updates. Though most of that goes through IRC or our forums over at shardsonline.com