Cs Cart Stable Version / Lts

What is the current actually stable version of CS - Cart. 4.6.4?

We are not interested in beta features. Does Simtech have any interest in doing Long Term Support versions of CS-Cart?

It would be nice to have a surprise-less upgrade path with only highly-vetted new features.

Current stable version is 4.7.1.SP1. At the moment it has only one module in beta stage - Product Variations.