Octopress 3 Themes: Options?

Do I understand correctly that the only theme available for Octopress 3 is Genesis? No way to have the beautiful theme that I see here, and here, and here? (I believe that it is the "default" theme from the previous version of Octopress). I am considering uninstalling v3 and installing v2; albeit I anticipate gem version grief. Any advise for this octopress/jekyll/gems newbie will be much appreciated!

BTW: It is difficult to determine whether what I read on the web is or is not applicable to v3. My default assumption is that it is not.

Thank you for your help.