Haswell processor on the 2013 MacBook Air significantly extends battery life

I'm impressed. The new MacBook Air laptops (mid 2013) are now shipping with the new Intel Haswell Core processors (4th Gen Core i5 or i7) and the battery life figures are very impressive.

• The 11-inch MacBook Air now lasts up to 9 hours (previous model lasted up to 5 hours)
• The 13-inch MacBook Air now lasts up to 12 hours (previous model lasted up to 7 hours)

I think Apple is setting the bar here with 11" and 13" ultrabooks, so get ready for some new Windows 8 ultrabooks and tablet PCs powered by the 4th Gen Core processor this summer. These devices will remain thin and light, but they will offer much longer battery life. I hope their battery life specs will compare with these Apple MacBook Air laptops.