id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
15065,Introduce register_theme_update_hook(),ericmann,,"Currently, theme authors overload the activation hook with routines for upgrading from older versions.

We should have a dedicated hook for when themes are upgraded.

The activation hook should only be fired when the theme is activated by the user.

Related: [http://core.trac.wordpress.org/ticket/14912 14912]",enhancement,closed,normal,,Upgrade/Install,3.1,normal,wontfix,,