Visionary Productions posted an FAQ including the answer to your question, on Facebook here.Is Exploring Eberron going to be updated for those that bought the PDF, but not the DnD Beyond version?
I tried the old Maverick and found it wanting, in general, a caster-focused subclass stapled to a half-caster felt really weak. But that's a shame, it is, conceptually, one of my fav Artificers as I liked the 3.5 Artificer with the Spell Storing Infusion, and this subclass is trying to emulate that.
Seems like mostly selling. Has anyone used the new subclass on D&D Beyond? As I mentioned earlier, early reviews found it had a bunch of missing components so wondering if it is fixes (my son is playing an Artificer in a campaign at school and has not declared his subclass yet).