Not me. I imagine that the diameter of the base has been reduced to accommodate an AFC ring to keep it at 16mm overall and you would need to drill a hole on the side for airflow (if you wanted to take advantage of the AFC). Given that there's now a GPin inside and it hybrids with the Piccolo, I assumed that the bottom cap is different as well. I imagine that the Spheroid v4 base is completely different from prior versions of the base, although I wonder if it's compatible with prior versions of the tubes and bell.
Not me too.