Ubuntu Development Manager Scott J. Remnant announced a Gutsy Release Schedule. Here's the quote:

In contrast to previous releases where we've decided the schedule during
UDS, we have planned the schedule for gutsy in advance:
* there are 6 milestone releases; initially spaced three weeks apart, then moving to two weeks apart from FeatureFreeze onwards.
* the developer sprint is a little earlier in the process, this was to accommodate dates of conferences and known developer holidays.
* BetaRelease is one week after the release of GNOME 2.20.0
* FinalRelease is three weeks after Beta, instead of the usual four; this is to allow us to release on October 18th. We will release with as many of the GNOME 2.20.1 fixes as possible.

It's not an exact quote, as Remnant made small typos (GNOME 2.12.0 and 2.12.1), which he corrected in another post.