One single thing that makes sense:
1) It is clear that the new LT1 direct-injection V8 and V6 engines will be going into the 2015 Camaros.
2) Therefore it makes perfect sense to offer the LS7 engine, and any other special engine they have (if they want) during 2014, since you can assume these engines are going to disappear from production cars.
3) AND this MAKE SENSE because now someone looking on the lot at a 2014 or 2015 Camaro can choose: Do I want the new (lighter weight) 2015, or a 2014 which has a special engine that won't ever been seen in a Camaro ever again?
4) I think many people will take the LS7 camaro to the point that it will run out.