In the final post of https://help.hover.com/hc/en-us/community/posts/209217687/comments/212473357 It was said an update would be posted when the release date of PowerDNS 4.0 was announced.
That shipped 11 months ago. 4.04 I believe is even out now.
Are we there yet?
I too am having to add my name to the list of those hovering on jumping ship to meet requirements...