Now that Guardians Of The Galaxy Vol 2 has finished principal photography and the cast have been waved off to other jobs and different characters, we're into a whole new phase of anticipation. Wrapping means we'll get footage soon, and then of course teaser footage turns into a first trailer, then a second and then before you know it the film is out and we're talking about Groot and Hulk teaming up in Infinity War. That's the nature of hype, patience by damned.
Strangely, there's very little known at this stage about James Gunn's Guardians sequel. We have a vague character outline (though it's not clear who the bad-guys are yet), we know Kurt Russell is PROBABLY playing Peter Quill's father and we know there's at least one sequence set on Earth. Beyond that though? Your guess is as good as mine, but little things are being revealed.