It depends on what you want. If you are fine with using only the betas and not using the alphas that may or may not be released in between, then you can just install the packages from the website.
Otherwise, you can do the same thing as before. However, fixes that are implemented during the beta process will live in the release/v2.0.0 branch and may only occasionally get merged into the develop branch. The merging happens at the latest when the 2.0.0 stable version is released, though.
Sorry to tell you that in the future, we will be using the git flow branching model which makes things more complicated for you.
http://danielkummer.github.io/git-flow-cheatsheet/