The touch-enabled Eee PC model(s) could come in the form of a convertible tablet although Shen wouldn't specify -- he only promised more details in Q1, presumably at CES. Unsurprisingly, ASUS has no plans to put Vista onto Eee PCs at all.
ENGADGET: ASUS CEO: Windows 7 touchscreen Eee PCs in mid-2009, $250 model on the way