Haml 1.7 has been released!
In addition to various bugfixes and plenty of new features, Haml 1.7 is now only 1.8 times slower than ERB. This is down from 1.5, which was 3x slower, and *way* down from 1.0, which was 8.5x slower. We've also introduced a new syntax for Sass attributes (the more CSS-like "color: #f00" can now be used in addition to the old ":color #f00"), helpers for creating well-formatted HTML in helpers, and plenty of other stuff. Check out the release notes at http://haml.hamptoncatlin.com/release-notes!