After reviewing the mailing list thread - and verifying with SUSE management that there is no other news, I guess I need to clarify some bits.
To avoid any further uncertainties let's put this whole discussion to rest and name the beast: 13.2 will be released in November 2014.
As 12.2 has shown, summer releases are *bad* - especially with conferences in spring, so I just don't want to go there and avoid the July release.
This means: I will take the 13.1 release schedule and adapt it and start releasing milestones soon enough. IMO enough people volunteered to help and I sure hope they stick to their claim. As a reminder: http://s.kulow.org/131-issues shows what tasks the openSUSE team collected as TODO - so please be ready to say which of those tasks you volunteer for. 13.1 Milestone1 was in May - so openSUSE conference in April is the perfect time to bootstrap a release team.
Naturally the release after 13.2 would be again in July - and the same argument applies then too, but let's talk about the future schedule once we have experience with the 12 months.