Initially, the carriers will be configured just for STOVL with a ramp for the new JSF aircraft.
However, the design includes the ability to upgrade the carrier for conventional aircraft launch using a catapult.
This is a requirement of the contract, since the carriers have a designed life expectancy of 50 years, i.e. longer than the service life of the new JSF aircraft.
The following link tells you a bit more about them:
http://www.naval-technology.com/proj...dex.html#cvf10
R.