Looks like they've screwed over a bunch of current loyal Apex users with no backward compatibility with the EB832. Why is that? It's an aquabus device is it not? Looks like it's only a matter of time before they develop new modules that won't be backward compatible as well. Was looking forward to the new return pump and FMM module, instead just found out we're slowly being phased out. Not diggin' this trend.
The EB832 has realtime power monitoring on individual outlets. The classic apex doesnt have the horsepower and resources to handle that. Could they make it work? Maybe, but the compromises to get it to function would be to great as to make it not worth it or impossible. It's very difficult if not impossible piggyback new hardware onto on old platform. Sometimes to get to the next level you have to breakaway with a new design that has the resources to support the features/services that people want and to remain competitive.
Classic apex has been around for quite a while. It might be possible that they can back port some features that don't rely entirely on the new hardware if it makes sense from a technical, support, and business standpoint. Embedded systems are never changed without good reason and never lightly. They are (most likely) using a more powerful newer processor from the same family to keep the code base the same. That's just one thing that's new to the hardware platform. There's probably much more. It's unreasonable to expect classic apex to keep going as it is without a redesign. You can still look forward to the COR and FMM. It will be nice to have that tight integration into the base unit and fusion.