@Shirasaki
Yes, you don't even get a full installer for each new beta. It has been really annoying to do a clean install of 10.11.0, since you always had to start at Beta 1 and there where only delta updates available. So you had to update to Beta 2, 3, 4... until there was a new full installer available at Beta 6 or 7 I think.
At least you now get combo updates on the App Store. So you just have to install one single update to get from every version 10.11.X to the latest 10.11.2 Beta.
Edit: And you can't do a recovery installation without getting back to 10.11.1, that is really bad.