Scalebound was originally supposed to launch this Spring, but early in the year Microsoft had announced the title has been canceled which put them in a questionable position. JP Kellams has departed Japanese developer Platinum Games in the wake of the Scalebound cancellation, after nearly a decade with the company. Kellams broke the news on his Instagram account, saying that branching out is part of his DNA. The statement is below.

“15 years ago, I came to Japan to fulfil my childhood dream of making games with my heroes,” he said. “No matter how hard the day, I always walked into the office in awe of the creativity around me, and with the joy that working with each and every one of my coworkers brought me. It is hard to say goodbye to them, to PlatinumGames, and to Japan. Yet, embracing new challenges is part of my DNA, and after almost 10 years of working with the team (more with my Capcom/Clover days), it is time to move on to new challenges that I’m excited to share soon. I’ll be forever grateful to all people who have touched this journey, because they’ve shaped who I am.”
“Platinum maintains its luster forever.”

It isn’t clear if his departure from Platinum was tied into the cancellation of Scalebound, but Kellam’s LinkedIn profile shows he was involved with Scalebound from the very beginning and was leading a team of 100+ developers on the title.
Source