The Asus Eee T91 is now shipping. Several sites already published T91 reviews. Find a list of reviews at the end of this post.
The Asus Eee T91 is not the first touchscreen netbook, but has been eagerly awaited since its announcement at the CES 2009.

The reviews are a bit mixed, mostly because a tablet is not really exciting for everybody. Sure we like to finger the iPhone, but a big tablet is in my experience not replacing a netbook or notebook. The Asus T91 is a convertible device and also has a keyboard, which makes it attractive to more people.
The price of $500 is for a tablet low, but high for a netbook. I do not think the Asus T91 will take over the #1 netbook sales position on Amazon the 1005HA currently owns.

Asus Eee T91 Review Round-up:
Engadget
NotebookReview
Gizmodo
Liliputing
Hothardware
LaptopMag

The Asus Eee PC T91 is now on sale on Amazon.com for $499.99.