The new flame editor 'fr0st' has gone public beta! Growing out of its experimental roots, it's now a fully fledged fractal editor, built on top of flam3 - and it's crossplatform (linux & windows for now). It supports newer flam3 features such as opacity, chaos, color speed, highlight power and early clip, as well as python scripting and integrated flam4 rendering. To download, go to the fr0st launchpad site https://launchpad.net/fr0st/+download .
You can give us feedback at the fr0st google group http://groups.google.com/group/fr0st or on Freenode at #fr0st-users.
Also, flam3 2.8 beta 6 was released about a week ago. Here's the changelo