The in Taipei on Monday running a quad-core Nvidia Tegra 3 processor and the Windows RT Tablet Preview edition. But reporters didn't get to play with the device freely.

The Asus tablet weighs 1.15 pounds, and is .32 inches thick, with an 8-megapixel camera at the rear, 2GB of RAM, 32 GB of storage and Wi-Fi. Windows RT will come with free Office 15 productivity apps and native Flash support. Asus didn't disclose any pricing or availability for the device.

The mere appearance of the tablet at a news conference at a major trade show was enough to speed up speculation about how soon the public will learn of other Windows RT tablets.

"The only one I've seen shown publicly is the Asus one, even though there's a lot of talk and a lot of closed-door presentations by competitors," said Rob Enderle, an analyst at Enderle Group. "Vendors are scared to death to reveal anything that would sacrifice any competitive edge."

He said the public might not see many details of Windows RT tablets until closer to launch dates in October or November.