Here is the official No Bull Press release:

“UK Indie developer No Bull Intentions is giving away all three episodes of its superhero-themed comedy adventure game Supreme League of Patriots to gamers who bought Arkham Knight for PC – even if they already received a refund.

“We think that PC gamers get taken for granted far too often. Those who choose to play on PC are often subjected to shoddy console ports, driver problems, poor optimisation and game-breaking bugs, not to mention invasive DRM and launch delays of weeks or even months for some titles. We’re making this offer to show our support for PC gamers.

“As such, we’re offering anyone who bought Arkham Knight for PC before midnight EST on 30th June, 2015 (digital or retail) a free copy of the entire first season of Supreme League of Patriots. While we have every confidence that Rocksteady and Warner Bros. will keep patching Arkham Knight until it’s the amazing game we all anticipated, that doesn’t take away the disappointment that gamers felt. We recognise that our little superhero caper can’t do that either, but we hope the comical adventures of The Purple Patriot will bring a smile to their faces while they’re waiting. After all, The Purple Patriot is possibly the only superhero in history to take himself more seriously than ‘the bat.’

“Gamers wishing to claim their free copy of Supreme League of Patriots should follow the instructions on our Tumblr blog: http://nobullintentions.tumblr.com.

“Supreme League of Patriots was released earlier this year for  Windows, Mac and Linux and episode one has just been released on the  App Store.”

And here is the official Warner Bros Games press release:

“Dear Batman: Arkham Knight PC owners,

“We want to apologize to those of you who are experiencing performance issues with Batman: Arkham Knight on PC. We take these issues very seriously and have therefore decided to suspend future game sales of the PC version while we work to address these issues to satisfy our quality standards. We greatly value our customers and know that while there are a significant amount of players who are enjoying the game on PC, we want to do whatever we can to make the experience better for PC players overall.

“Thank you to those players who have already given valuable feedback. We are continuously monitoring all threads posted in the Official Batman: Arkham Knight Community and Steam forums, as well as any issues logged with our Customer Support (support.wbgames.com). If you purchased your copy of the game and are not satisfied with your experience, then we ask for your patience while these issues are resolved. If desired, you can request a refund at help.steampowered.com (Steam refund policies can be found here) or the retail location where you purchased the game.

“The Batman: Arkham fans have continually supported the franchise to its current height of success, and we want to thank you for your patience as we work to deliver an updated version of Batman: Arkham Knight on PC so you can all enjoy the final chapter of the Batman: Arkham series as it was meant to be played.”

Meanwhile, as stated, the PC version of the game has been pulled from shelves and digital storefronts.