I worked hard during the month of November, even if I couldn't manage to finish everything for the release of the next alpha build. That's going to be ready in a week or 2, so expect a new post soon.
The 3 main updates from this past month of work are:
Tower defense mechanics (WIP)
The main new feature of the next alpha release, it's not finished yet, but I already implemented 2 units and 1 structure that can spawn mini units. You won't be able to control them, but it is possible to assign them a destination target where they will go autonomously at the beginning of your turn.
New planet map
Planets now have less missions (down to 9 from 12) and it's possible to conquer one by winning only 4 missions (it was 6 before).
Self destruction
You can blow up your units and structures up to damage everything surrounding them, Kamikaze style.
You can check out the full update on itchio where you will also find other news and details about some other minor changes.