* {{miss|{{nbug|850065}} Incremental cycle collection (Andrew)}}
* WebComponent (blake, william)
** {{okdone|{{nbug|653881}} Land XBL refactoring patches}}** {{okmiss|{{nbug|806506}} Implement ShadowRoot interface (as of March 25th)}}*** Done, but needs reviews and landing.** {{okdeferred|{{nbug|854736}} Implement basic insertion points without selector support}}
* {{ok|{{nbug|789919}} Snow white (for faster addref/release and for security fixes) (olli)}}
* {{miss|{{nbug|853893}} Sane event handling for workers (olli, khuey)}}