Classic is lead with power. It’s built for the Dillan Archer’s of the world. It’s for power marketers and business builders who want to build custom systems to solve complex business and marketing problems.
Current is lead with ease. It is designed for service-based business owners who want something to run their business, fix their follow-up, etc… they may not have the time or desire to be a power marketer (right now.)
From a platform standpoint, Current shares much of the same back-end as Classic. However, as Current matures, some of the Classic modules won’t be brought over - they will instead be re-imagined. One case in point is Pipeline - it’s being re-built from the ground up. And a brand new feature - a direct integration with Google calendar to manage appointments is currently being released…so a lot of new and re-imagined features are quickly being released on Current.
Eventually, the two products will be uniquely branded. Consider the “Current” and “Classic” nomenclature temporary.
As far as API updates, you should be hearing about that soon. I don’t think any development has stopped with the API, we just haven’t been keeping up with posting updates as we have in the past.