Where the UA there since launch? I think they were introduced in 1.2/Wings. Maybe Drew Wagar meant that we have to wait for more news or we have to continue focused (or be more focused) on the news we already have.
In the other hand I think all "stars areas" point to Sol system because they are made with real astronomical data (not procedurally generated, named and placed), and those data are collected, obviously, from Earth.
Correct me if I'm wrong but those dense star areas I've pointed out have no corresponding real astronomical data, as far as I've searched from google.