As anyone following Intel's launch of the fourth-generation Core CPUs knows, the Haswell chips offer improved performance while strengthening battery life. Dell is claiming that the new processors will boost the XPS 12's speed by 1.6 times and battery life by 2.5 hours. (They'll also boost its starting price, but more on that in a bit.)
In addition to the Haswell upgrade, Dell has given the XPS 12 support for Near Field Communications, letting you transfer files by tapping an NFC-supporting device to the Ultrabook.
The expected battery life jump will help overcome one of the XPS 12's weaknesses, based on Sandra Vogel's review from earlier this year, which otherwise praises the system's swiveling screen and overall design.
The previous version of the XPS 12 has received a price cut with the introduction of the new model. Its new starting price is $1,099.99, whereas the Haswell version starts at $1,199.99. At that price, you get a Core i5-4200U processor, 4GB of RAM, and 128GB SSD. For $200 more, you can upgrade to a Core i7-4500U and 8GB of RAM, while the $1,999 configuration keeps the i7-4500U and 8GB of RAM but provides a massive 512GB SSD.