Save states good. A good upgrade.
Like i been saying from the start that it was an X5 redesign now we have word concert from the horses mouth
Yes, it's the only thing that makes since. Change the form factor and release all future versions in that form factor. Then put the 'extras' features in the x7 with whatever required form factor it needs, and charge more for the extras.
as old component hard to get or re-design of pcb
there are always newer models
But usually those newer models aren't renamed in such a way that it appears they have more features, when they actually don't.
They use new parts and might require different software. Reason enough to give them a new name as to not confuse customers (e.g. "use this file for ED64 before 2019, this file for ED64 after 2019") - a good opportunity to align the name to the current naming scheme.
Also previously if there isn't a major upgrade, but simply part replacements/board revisions, I think he uses 'Pro' to distinguish it from earlier versions.