Considering Asus TaiChi or Acer S7. None of them are released yet. S7 is supposed to be released by end of this month and TaiChi release says 4th quarter, so don't know if I can wait that long.

Acer Aspire S7 review | Laptops and netbooks Reviews | TechRadar
ASUS reveals TAICHI convertible notebook / tablet with dual 11.6-inch and 13.3-inch displays (update: hands-on photos and video) -- Engadget