Since Enterprise Beans 4.0 is not going to be backward compatible release because of the package and namespace change. What should be kept in Compatibility and Migration chapter.
The deployment descriptor target namespace is also changed, so statements like below will not hold true:
All Enterprise Beans 4.0 implementations must support Enterprise Beans
3.1, Enterprise Beans 3.0, Enterprise Beans 2.1, Enterprise Beans 2.0, and Enterprise Beans 1.1 as well as Enterprise Beans 3.2
deployment descriptors. The definitions of the Enterprise Beans 3.2, Enterprise Beans 3.1, Enterprise Beans 3.0, Enterprise Beans 2.1,
Enterprise Beans 2.0, and Enterprise Beans 1.1 deployment descriptors can be found in the
Enterprise Beans 3.2<> and earlier specifications.
Since Enterprise Beans 4.0 is not going to be backward compatible release because of the package and namespace change. What should be kept in Compatibility and Migration chapter.
The deployment descriptor target namespace is also changed, so statements like below will not hold true: