Apple announced the new iPad 2 along with other stuff like the new iOS 3.4 which will be available on March 11th. The new thinner, dual-core, 2 camera and new white color iPad will be available to order on March 11th.
I found the comparison between the iPad and iPad 2 on Engadget.com:
|Resolution||1024 x 768||1024 x 768|
|Processor||1GHz Apple A4||1GHz dual-core Apple A5|
|Graphics||PowerVR SGX 535||?|
|Storage||16GB / 32GB / 64GB||16GB / 32GB / 64GB|
|Cellular radio||EDGE plus triband HSPA||EDGE plus quadband HSPA or
CDMA / EV-DO Rev. A
|Bluetooth||2.1 + EDR||2.1 + EDR|
730g (WiFi + 3G)
The new tablet will come with an HDMI output capable of 1080p, which you need to purchase the 39$ Apple Digital AV Adapter. The new CPU is said to be up to twice as fast, with graphics performance up to nine times better than on the original iPad, while power requirements have been kept the same.