ASUS Transformer Prime likely will not be a quad-core tablet in the world's first on the market. Most likely before Prime Transformer market, Lenovo has launched its own quad-core tablet. Lenovo rumored to announce the launch of quad-core tablet. In addition, the tablets will also be equipped with ice cream sandwich Android OS aka Android 4.0.
Quoted from engadget, will use Nvidia's Tegra processor 1.6 3 with 10-inch screen. In addition, there will be 2GB DDR3 RAM with dual cameras on the front and rear. But unfortunately there is no HDMI port on this new tablet.