Based on the experience of the past few years, I'm trying a modified strategy.
My current plan, subject to change, is to put out a 100% Wheezy
compatible version (12.0) prior to Wheezy final, and follow that in
6-9 months with a WheezyPlus (13.0) version, after Wheezy final.
This way, the people who want to run alternate desktops, and such, can
do so from 12.0 without running afoul of MEPIS package tweaks.
And those who want to be more up to date in the long run, and use KDE
only, will have 13.0. I expect that it will be possible to upgrade
from 12.0 to 13.0, if you stick with KDE. But if you use an alternate
desktop with MEPIS, you simply shouldn't plan on running 13.0.
To emphasize the difference, I may call 12.0 a stable release, and
13.0 an experimental release.
If I have the spare time, the alpha could be ready around May 1.
This is consistent with Warren's numbering system, with major X.0 releases denoting changes to the Debian base, and minor X.5 releases denoting KDE/kernel upgrades to major releases. This is the information we've been looking for.
What's interesting is that Warren is contemplating an experimental release. That's uncharacteristically cutting edge for him.