Hi Grifters!
This update adds a Brawl mode for Rook. Once you've completed his story at prestige zero, you will be able to play accelerated runs working out of Hebbel's bar. We've also added some additional 'promoted' enemy variants that only come out at prestige one or higher. Also, Rook's parasite mechanic has gone through a bit of an overhaul. He gets infected a bit later, the cards upgrade a bit faster, and always get more powerful until they reach a useful end-stage form.
Our next major update will be on July 16th. If you'd like to follow along as we develop the content for that, check out the experimental build! New stuff will start showing up there early next week (like this little guy!)
Finally, this release also adds a lot of balance tweaks, bug fixes, and general quality of life improvements. You can read the full patch notes over on the Klei forums.