Microsoft will release an "Ultimate Collection" version of Forza Motorsport 3, judging by its appearance on the Australian classification database.
It's not the first we've heard of Ultimate Collection, either. A bit of digging reveals that it also appeared on the German USK database earlier this month for a short period.
There's no sign of it in the UK's BBFC listings nor the US' notoriously trigger-happy ESRB equivalent, and Microsoft has not commented.
At E3 in June Microsoft unveiled a new Forza Motorsport game for Kinect and said it would be released in 2011, so perhaps this Ultimate Collection is a stopgap aimed at diverting some attention away from Sony's Gran Turismo 5 in November.
Microsoft and developer Turn 10 have supported the game with a number of premium downloadable content updates since its October 2009 release, so it would not be surprising to see those bundled together.