Do you have plan to add a DSL Designer to the framework for Business Entity Modellling and relational code generation ?

Or any other way to improve this requirements ?

Nearly ?

As you have noticed, we are still waiting to release the 1.6.6 build which has over 200 enhancements, fixes, etc. since the 1.6.5 release.  So all of our releases are pretty "major."  In regards to when we will implement new DSL functionality, I cannot say exactly.  I know that it won't happen until 2009, but that is about all I can tell you at the moment.