Not necessarily. It is just that starting to promote a cricket game in October makes a lot more sense in the Australian market than doing so in September.So its gonna come out in october
Mid-November is probably the ideal time to release the game - so that it is on the market in time for Christmas and their marketing can run during the Ashes.
But obviously, that's why it matters what is happening with AC13 - if they are still on for a release, mid-November before the 1st test would be the target release date, so Big Ant would want to release with enough time before that so their marketing is in clear space.
The fact we heard nothing out of 505 this month would make me suggest, with my vast experience of releasing cricket games, that the 24th October is the best hedge between the two outcomes with Ashes. If that date is right, I'd expect the announcement next week.