The Klingon Empire is one of the main forces to reckon with in the Star Trek universe. This society of strong and cunning warriors are often at odds with the other races. Soon, you'll be able to join the empire and fight for glory, as Modiphius is taking pre-orders for the Klingon Empire book for Star Trek Adventures. It's available as a pdf. and two different print versions.
From the announcement:
Today we’re delighted to announce the pre-order for Star Trek Adventures: Klingon Core Rulebook, an amazing new sourcebook which heralds the advent of the renowned Klingon empire into the Star Trek Adventures RPG.
The Star Trek Adventures: Klingon Core Rulebook is available in print in both Core Rulebook and special Collector’s Edition editions on Modiphius.net and as a special PDF preview on Modiphius.net and DriveThruRPG.
The print titles are expected to ship in autumn/Fall but both print pre-orders will receive the PDF preview right away. Purchasers of the PDF on Modiphius.net will receive as special code which can be redeemed against any future print purchase and buyers on DriveThruRPG can contact firstname.lastname@example.org to take advantage of a similar offer.