Just by way of explanation - XenForo v2.0 has been in development for over 3 years now, and has been available for download for beta testing for only about 4 weeks (still lots of bugs to be resolves before it is deemed "stable" enough for use on a real website). We've been waiting a long time for progress with this (and it has at times been quite frustrating how long it is taking).
This new release is a complete rewrite from the version we currently run for ZooChat - as in, they pretty much threw out the old code and started from scratch to provide the same functionality, but built on a new and more extensible platform.
This means that v2.0 of the forum software won't actually provide that much in the way of new functionality - they are largely aiming for "functional parity" (ie it can do everything that v1.5 currently does, but not much more), and won't start adding new functionality until at least v2.1
Because of the fundamental changes to the software platform, I'm going to need to rebuild ZooChat from scratch to work with v2.0 ... all posts and photos and everything will be migrated across to the new site and it will largely work the same as it does now (with some UI improvements - especially for mobile devices) - but there is a lot of work required to get ZooChat ready for upgrade with all of the customisations I've made to the website.
The side effect of this is that I've been reluctant to do any significant development work on the current site because any changes I make now will need to be done a second time before we can move to XenForo v2.0 - and I simply don't have time to build that functionality twice!
We're getting quite close to a stable release of v2.0 of the forum software, so now is the time for me to start customising things ready to upgrade ZooChat. This process is likely to take a couple of months - I'd hope to have something ready before Christmas, but I won't make any promises there - it's more likely going to be at least January.
I'll be starting some threads discussing some of the changes coming so you can get a feel for what we're going to see in the new version. There's also plenty of scope for tweaking the way things work and doing our own customisations for our needs on ZooChat - so the more suggestions you can make, the better.