Firefox 3.1 becoming Firefox 3.5

As was discussed at the delivery meeting yesterday, we're proposing to
change the version number of Shiretoko from 3.1 to 3.5.  The increase in
scope represented by TraceMonkey and Private Browsing, plus the sheer
volume of work that's gone into everything from video and layout to
places and the plugin service make it a larger increment than we
believe is reasonable to
label ".1".  3.5 will help set expectations better about the amount of
awesome that's packed into Shiretoko, and we expect uptake help from that as
well.

It's important to note that 3.5 represents a better labelling of our
*current* scope, and not an indication that we intend to significantly
increase this release's scope any further.

Beta 3 will be the last milestone release with the 3.1 version number, and
Firefox 3.5b4 will be the following one.  mozilla-central's Minefield
version will be changed to 3.6pre as a placeholder.  For an abundance of
clarity: this does not indicate that the next version will be called
"Firefox 3.6" when it's shipped.

The Gecko version number will remain 1.9.1 on the mozilla-1.9.1 branch, and
will remain 1.9.2 on mozilla-central for the foreseeable future.

Work is underway to make sure that we can get the version identifiers
updated in relevant places like AMO, bugzilla, crash-stats and tinderbox
with minimal disruption.  Those changes will start to roll out this week.

There has been a lot of great conversation over the last few weeks about how
to balance product cadence (and its attendant impact on users) with
web-technology delivery and support for multiple dependent products; I
expect more concrete proposals to manifest here in the coming weeks, as we
get Firefox 3.5 (woo!) closer to ship.

Mike