Covering Macworld.

Future Tense's Jon Gordon is Twittering Macworld, and the Houston Chronicle's Dwight Silverman is both Twittering and liveblogging (sort of).

Your Tech Blog is liveblogging the event too and writes:

Today, a third kind of notebook called MacBook Air being introduced. World's thinnest notebook. 0.76" 13.3-inch screen, LED backlight with instant on. Full-size keyboard with backlighting. Large trackpad with a variety of gestures for panning, rotating, zooming (with iPhone-like pinching), etc.

Via News Cut.

Update: And there it is, Apple's guided tour of the Macbook Air. Nice!