Samsung demos Series 5 Ultra Touch and Series 5 Ultra Convertible Ultrabooks, we go hands-on -- Engadget

two screen laptop(one on the back)
ASUS reveals TAICHI convertible notebook / tablet with dual 11.6-inch and 13.3-inch displays (update: hands-on photos and video) -- Engadget

msi slider... hmm
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ASUS Transformer AiO official: all-in-one PC dual-boots Android and Windows 8 -- Engadget

ASUS outs Tablets 600 and 810, Transformer-like slates running Windows 8 -- Engadget

Acer introduces Windows 8 all-in-one U Series at Computex 2012 (update: hands-on video) -- Engadget

Looks like its just the tip of the iceberg...

Have to wait for Dell, Toshiba, Lenova and HP to show up with their wares...