So far im enjoying the game, are there more units that arnt in the game yet or is this it? i understand that its still a work in progress so no hate here...
As of right now, devs have been talking about 100+ units being planned for the game. Which will be added as the beta goes on. Devs have also been talking about additional units that they are currently contemplating ontop of that number. There will be many more added. Note: I'm pretty sure when they mean 100+ units they are not talking about structures.
They will be adding more units. There's also a number of units that are currently in the game files, but not useable in gameplay. Here's a list of units that are in the game, but not playable: http://pamatches.com/wiki/not-in-the-game/ As was stated, they have plans for 100+ units as they said in a livestream. It's one of the first questions. Source: http://pamatches.com/news/planetary-annihilation-livestream-91313-about-beta/ There will also be mods adding new units. Possibly even entirely new races.
