Demo on Steam is still outdated
I downloaded the demo from Steam the other day and was met with v0.18.3. Googled it and found bug #5224 which was closed and said to make a new issue if it came up again.
I only realized I was on an old version because the demo seemed a little too limited to be your standard demo limitations.
Category and version are set to whatever because I'm not really sure what best applies to the demo in this context.
I'd personally say this is a "normal" priority thingy because it could be turning off less savvy players than me (this version seems pretty crashy, too), but I'm not one to impose.