Bootstrap 2.0 has just released with a lot of new features, rewritten documentation, and use cases to test with the addition of media queries.
They have also added some new components like progress bars, customizable gallery thumbnails and split buttons. Another great new feature are the new glyph icons, that you can use to style your buttons and menus.
Now there are total 12 custom jQuery Plugins for you to enhance Bootstrap. It includes, Modals, Tooltips, Dropdowns, Scrollspy, Carousel and more. All in all a huge update with many exciting features.