Please update your local repository and switch to the branch "develop". Prepare your local git installation with the git flow extension (the unix guys should install the git flow extension for bash as well). Don't forget to configure your favourite Git client GUI as well. To see the jgitflow plugin in action within Atlassian watch this presentation from the plugin author.
Please check this version of the Sculptor Maven plugin. You can use a profile in your local "~/.m2/settings.xml", e.g.
<profile><id>sculptor-staging</id><repositories><repository><id>Sculptor Staging</id><releases><enabled>true</enabled></releases><snapshots><enabled>false</enabled></snapshots></repository></repositories><pluginRepositories><pluginRepository><id>Sculptor Staging</id><releases><enabled>true</enabled></releases><snapshots><enabled>false</enabled></snapshots></pluginRepository></pluginRepositories></profile>
Please check this version of the Sculptor Eclipse plugin. You can install it in Eclipse via "Help > Install New Software...".
When should I pull the trigger to propagate the staged release to Maven Central?