A day before Apple releases the latest version of the iPad, Apple's stock rose to over $600 a share for the first time in their history. 

Some industry experts believe Apple could sell 1 million of the new iPad on Friday, when it becomes available to the public. Apple has already stopped taking advance orders for Friday and said customers should expect a two- to three-week wait for purchases made through its online store.

Prices aren't changing from the previous models. They will start at $499. Versions capable of accessing cellular networks will cost $629 to $829.