Can you speak as to the flight, or is that undisclosed? Any info on release date?

Not sure on the release date, but I'd put the flight somewhere between a Verdict and Drone. It does not want to turn at all, and gets left pretty hard but doesn't quite dump like most mids that are this overstable. Powers down well and is impressively good at holding a smooth hyzer. Definitely beefier than the disc profile might lead you to believe.

I can see myself using this quite a bit in the future, but I've only tossed it maybe a couple dozen times. Time will tell how useful it ends up being, but so far so good!

Is it beadless & flat?

when will it be made in S Line?

wild guess, we get C Line MD4s for the July 20th EO Fundraiser

My thoughts exactly. Hope this will be the next Media Partner tester disc.

Mostly flat, with a very small bead

I just hoped that I would've been selected for Media Partner team this year lol...

P-Line PDs seem to out of stock on the Discmania store and most online retailers. Any update on when they might be back in stock?

I hear ya :) Sorry. I will do my very best to get a review out as soon as we have it. I also pass everything along in form of raffles etc. so watch my social media (everything that does not make the bag, that is :D of the tester discs I think none have made it so far except the CD3)