Just spotted the Black Knight Pro-X squash racket in 2020. Saw it at SquashGalaxy but it seems to be unlisted, temporarily.
Here’s some more product info on Black Knight’s website (thanks Stu).
A new feature frame sold exclusively in the USA for 2020! The PRO-X is a lightweight teardrop frame that has had great feedback and aggressive balance. Featuring a large sweet spot, and a unique rigid cross section profile, ball striking is very precise with the large 490 cm frame. This, combined with Ashaway’s new MultiNick 18 String impresses with a fantastic level of power and control. Available only in the USA