I have been reading the posts from JCL and from what I have read the next major version (A7) will have Lite-C. It will still have WED, MED and SED. Lite-C is also a standalone product with a version of MED that can be used to create models and levels (mdl as a level). This version would be ideal for casual games like those found on realarcade. A7 with Lite-c is a fantastic combination that can be used to create complex levels with complex logic to run them.
I am so looking forward to A7!