I heard about it on the radio this morning  - the keel will be laid tomorrow.

The ship will be about the same size as the Nimitz class that it replaces, but because of electronics the crew will be around 2,500 (the Nimitz class crew is around 4,000).

Instead of steam launchers, aircraft will be launched pneumatically.  Nuclear powered, the thing will do 40 over 30 knots (46 34 MPH)