Being the world's lightest 13-inch laptop isn't big news these days, but Toshiba's forthcoming notebook has a couple of extras that give it a bit more cachet.

The company hasn't made a formal announcement, so the name and pricing aren't yet available, but some interesting specs have leaked out from the VozExpress Web site. When equipped with its 512GB solid state drive, the laptop weighs less than a kilogram (2.2. pounds); a 500GB hard drive is a bulkier, though presumably cheaper, option. Nonetheless it will rely on standard-voltage Intel Core i3 or i5 processors instead of using an ultra-low voltage CPU you find on other ultra-portables.

Using a standard-voltage processor will impact battery life, of course, and Toshiba appears to have an innovative answer to that concern. In addition to the primary battery, this notebook comes with a secondary battery using SCiB (Super Charged ion Battery) technology. According to Engadget, prototype SCiB batteries were recharged to 90% within 10 minutes. If Toshiba's version works anything like that, it should be a big competitive advantages.

Other features that Toshiba seems to be touting include the first "honeycomb rib structure" and new Blaze Mountain CPU cooling, though it's unclear what the advantages of either is. But the leaked info has probably whetted the appetites of those looking for an ultra-portable and not interested in waiting for a MacBook Air refresh.