Sony is officially getting into the Ultrabook game with the announcement of its first couple of models for this market: the Vaio T11 and T13. As the name suggests, they'll come with 11- and 13.3-inch screens, and will offer many of the features we've come to expect from this form factor, including a 17.8mm-thick magnesium and aluminum body as well as a weight of ~3.5 pounds for the larger model and up to 9 hours of battery life.

In terms of hardware specifications, Sony has only detailed the Vaio T13 model at this point, which should pack an Ultra-Low Voltage (ULV) Intel Core i3 Sandy Bridge processor 4GB RAM, and integrated Intel HD 3000 graphics. Storage options include a single SSD (exact capacities weren't detailed) or a hybrid system that pairs a 320GB hard drive with a second 32GB SSD to improve system boot times and responsiveness.

Other features include a 1,366x768 resolution, 802.11n Wi-Fi, Bluetooth support, HDMI and VGA outputs, USB 3.0 and Ethernet ports, a media card reader, 1.3MP web camera and a touchpad with gesture support. Sony is also throwing in a 90-day trial of Intel's Anti-Theft Service to protect personal data from unauthorized usage.

The new Vaio T series is expected to arrive later this month in the US for an unspecified price, with a launch in the UK scheduled for early June. There was no mention of Ivy Bridge but we assume Sony will upgrade its laptops to Intel's latest architecture sometime after the low-voltage variants of IVB arrive in June. With that in mind, if you are in the market for an Ultrabook, we recommend waiting a couple of months before making a purchase.