[philfreo]

   Assets (illustrations and examples) are now retina-ready.

Too bad this is for the documentation pages only and doesn't include bundled icons. :(

http://twitter.github.com/bootstrap/base-css.html#icons

[coderdude]

Bootstrap was going to ditch Glyphicons (and IE7 support) with 2.2.2[1] but it looks like they're either holding off on that or they changed their mind. I recommend using Font Awesome[2] instead of Glyphicons.

[1] http://blog.getbootstrap.com/2012/11/09/glyphicons-font/

[2] http://fortawesome.github.com/Font-Awesome/

[sontek]

We use fontawesome as well, it makes your site look much nicer.

You can also use http://retinajs.com/ to scale stuff up if you want.

[wiradikusuma]

Even better, pack your own custom glyphs from icomoon.io.