Would you say that the top of SVN is stable enough... How about the latest build that is available from Xith web site.
Yes. I would thnik so. If you're not planning to use Cal3DLoader or TDSLoader, which are not yet ported to the new Loader base (so the API will change in this point) or OBJLoader, which has some problems loading textures (I'm currently working on this topic), then it is definitely stable enough. Well, if you have any problems with it, please ask here and someone like me will fix the issue

.
The not-yet-ported Loaders will be done during the next week.
It is just not a good idea to port to version 0.8.0 at this time, since you would do a lot of work, that you need to do again, when the next release comes out (soon). And there's a whole lot of more features included in the current SVN.
For more details about our project please refer to our new web site at
www.icecad.com, you might wanna update the projects xith.org as it points to our old web site.
This is a content management system

. Does it use Xith

What for does it use xith?.
Marvin