Came across ITX Gamer ,a great site focussed on the high end of mini-itx computing. They've been regularly reporting Mini-ITX motherboards ready for Chipzilla's latest CPU line up, the Sandy Bridge i3, i5, and i7 Processors (Socket 1155). These give off less heat, use less power, and are way better value (especially at the top end). Spoke to a few distributors today and seems Intel's DH67CF will be first available in the UK, followed by Gigabyte, Asus, and Foxconn and ECS likely early next month.
Site has a great mini-itx motherboard comparison tool as well: