I'm looking to purchase a new Ford Explorer sport, why is the 2015 such a secret, what does it look like?

When is the release date on this vehicle. I do not like the proto-type I'm seeing. Have there been any changes on this vehicle? Do I need to by a 2014

The Explorer will get mild refresh in mid 2014 for the 2015 model year, minor styling changes, but mechanically it should be same as the 2014 model.