QualityWings has announced on their official Facebook page that they are looking for a limited number of people to help beta test their Boeing 757 and Bae 146 products. Those that are successful in becoming a beta tester will be testing the upcoming P3D v4 versions of the products. The only requirement is that you are a current 757 and/or 146 customer.
If you are interested, all you need to do is send an email to info@qwingssim.com stating your name, preferred aircraft (you can only choose one), order information and when you will be available to test the product during February 2018.
Please note that this is only for the Boeing 757 and Bae 146. At the time of this writing QualityWings are not accepting beta testers for the upcoming P3Dv4 release of their Boeing 787.