Arduino Tre, will it ever come out?
The latest news from Arduino that I can find is in their blog archive that the second round of beta testing is out.

The mentioned this:


  When is the Arduino TRE going to be finally on the market? The board is ready, but we don’t have a final release date yet because we are still figuring out some manufacturing matters. We’ll keep you posted!


I'd imagine that the Arduino LLC vs Arduino SLR legal issue is also delaying the production.

Other than that, speculation is all that we know.

P.S: it's still spring until Sunday, June 21! :-)