Done:
- Landed some fixes for Firefox 5
- Improvements to the custom protocol to make displays nicer
- Updating the patch to extend the add-ons manager, mostly complete
- Replacement compatibility wizard is near complete
Next:
- Sort out a list of high impact yet low risk things that we can take for Firefox 5
- Land the patch for extending the add-ons manager
- Get the compatibility wizard ready for review
- Get the new protocol handler in some sort of feedback-ready state