Zedu released patch 3.43 last week. This patch includes a new map editor, which is a separate map from Star Battle. (Search the arcade for “Star Battle Map Editor” and use the map that’s by Zedu.) Setting the map in lobby settings to “custom” in that map will allow you to load a created map.
For the regular game, the colossus gained new utility against support ships to enhance its late-game viability. Thermal lance now destroys point defense drones, and a passive field disruptor allows it to destroy force fields.
The frigate’s maximum mine count was increased to 60.
Point defense drone got a minor change, scaling its energy starting amount and requirements down by a factor of two, effectively doubling its long-term energy regeneration.