Syntax highlighting in Xcode isn't working so well with Xcode 4. TextMate and Sublime Text 2 are the more popular environment for Cappuccino editing right now, I think, while using Xcode only to edit the UI files.

Change log here if you really want all the nitty gritty details: https://gist.github.com/1370087

The Interface Builder integration is fantastic now. You really should be using it, it's worth the time it might take to port your CIBs to XIBs. Lots of things just work for Cappuccino in IB, including bindings and custom table cells.

Quite alive indeed: https://github.com/280north/cappuccino/commits/master

Cappuccino the framework is open source.

Got a whole page of projects here:

https://github.com/280north/cappuccino/wiki/Current-Projects

A fairly recent impressive Cappuccino application is PicsEngine:

http://www.picsengine.com/

Also check out GitHub Issues which very nicely demonstrates the state of the art TableView widget:

http://githubissues.heroku.com/

Archipel is more of a technical app highlighting a ton of various '2.0' techs in one app unified by the Cappuccino experience:

http://archipelproject.org/

Amazing amounts of amazement inside this release.