Now, in the new JSR 313 for Java EE 6, there is a proposal for something called "Pruning". An Umbrella Expert Group shall look at and decide which parts of the specification, that are to be deemed ready for pruning. This will then be noted in the current specification. The Umbrella Export Group for the next release of the Java EE specification will then decide, if the--by the former specification named--features shall be marked as "optional" in that specification. If a feature is marked "optional", the vendors are free to not include it in their products.
The specification currently under development for Java EE 6 will consider technologies, which can be marked as optional in the future Java EE 7 specification. Features already mentioned are "EJB CMP" and "JAX-RPC".
With Java EE 6 targeted for 2008 and who knows when for the Java EE 7 specification, the old "EJB CMP" specifications will definitely be with us for a long time.