If you are interested in running the dev versions, you can find the latest build at the Build site. Dev builds are usually stable, however, should the light next to the build be red or yellow instead of blue, you should probably avoid that build. In general, you should stay in the IRC channel (irc.esper.net #CommandHelper) in case there are issues, so they can be quickly resolved, and you can be notified of potential problems, and new builds. The Staged API is for the dev build, so you can have documentation for the newest builds. IRC is the preferred method of bug reporting, however the forum or dev.bukkit.org are also ok.