It is currently hoped that the next Beta Test release of Poweramp v3 will be ready sometime in April 2018. For the latest update posted by Max the developer, please see http://forum.powerampapp.com/topic/10136-poweramp-v3-project-update-please-read-first-post-for-latest-info-before-commenting/?page=77#comment-46297
As you are probably aware, the Poweramp developer, Max, has been working hard on an updated material design user interface for Poweramp v3, which required a full ground-up
Sorry for the delay)
I think I'm quite good at programming, but unfortunately, I'm bad on managing other developers, so basically I do everything by myself.
That of course is not speeding things up.
Also, I try to polish each feature until it works 100%. It's not possible to predict how long exactly that or this feature will take time to complete.
Especially on Android, when you may need to write whole functionality from scratch as platform-provided one is buggy, is not reliable