That syntax has been essentially deprecated for a while now. I think one of the most important aspects of SASS syntax is that any valid CSS3 file is a valid SASS file and compiles without error.

This can't be true of the indented-syntax, which has two downsides:

* It's a huge barrier to entry for anyone new to the framework when they already know CSS.

* It makes porting and/or incorporating existing CSS unnecessarily complex.

(The same things could be said about HAML, but people generally have no problem writing HTML, while CSS is still a fluid and ever-changing system).

The indented-syntax is way nicer to look at, but it's a good thing that it's heading off into the sunset.