One of our awesome user-ees has created a patch to fix something that has plagued Haml for a while now.... Multipart emails!
http://dev.rubyonrails.org/ticket/7534
He fixed a "TODO" line in the code for Rails and it would allow us to release Haml 1.5.
We're currently awaiting the release of Haml 1.5, but we can't really until this gets fixed. At least some combination of Haml 1.5 + Rails Trunk should allow mailers to use something besides rhtml|rxml.
Any love, fella's?
-hampton.