Hey there! Definitively will be a demo. Right now we are finishing some stuff and we're doing QA. After that, some polishing and we'll have it as a first closed demo (since it will be pre-alpha and pretty rough). A more complete and polished beta demo should be available by the end of spring / beginning of summer.
But if you are interested, you'll be able to play way before that with the pre-alpha demo. I'll give keys to anyone who wants, but it will be closed since the game will be rough.