I would plan on it being a while for the CBC 2.5 release. I have not started the formal code for it. It should go faster than a 3.0 release as I plan on it only being a change to work on J1.5 with no new features. So basically I am going in to do a quick surgery, replace the xAjax plugin (as that version is not J1.5 compatible), then replace database and global variable calls to the new desired calls. I will probably connect with the CB Framework variables as planned with CBC 3.0 but I plan on not doing any testing on Mambo, etc. I will mainly Test on J1.5 and may test on J1.0.
As far as J1.6 I think the core is a rewrite of J1.5 with one of the major improvements being a better ACL (still to be determined how it works). I have another project where the lacking ACL is the only issue stopping us from using Joomla so I have been keeping an eye on that one. They are also cleaning up quite a bit of the code, MVC mainly, but lots of interesting possibilities being tossed around between that and their GSoC projects.


