ASUS is showcasing 8.9" and 10" Eee PC Tablet systems at CeBIT, you can find some pictures at Dutch tech site Tweakers.
The 8.9" T91GO features the Intel Atom Z520 1.6GHz, 1GB memory, a 16GB SSD, SDHC memory card support, 3G and optional GPS. The tablet weighs just 0.96kg and should have a battery life of around 5 hours. The 10" model has similar specs, save its Atom N270 processor.
The pricing is still undetermined, but ASUS stated you can expect a price of around 500-600EUR for the 8.9" tablet.