** Most of the cycle collector fixes have landed. Telemetry shows a dramatic reduction in cycle collection times for Firefox 13. Olli and Andrew are investigating the remaining causes of long CC times.
** Vladan landed a dom storage fix that should reduce the amount of main thread SQL done by content {{bug|714964}}.
** Lots of frontend Telemetry probes are landing (see {{bug|671038}}) and already paying off as we caught a tab animation regression in {{bug|724349}}.
=== Firefox Mobile ===