Waypoint asked the same question back in April:
Sony did not respond to my request for comment, but after emailing a bunch of developers at Wild Sheep Studio, one of them did get back to me with, well, something.
“Thank you for your interest,” said gameplay programmer Leonard Allain-Launay. “Wild Sheep Studio is still early stage and we’re not issuing press statements for now.”
Allain-Launay declined to elaborate further, but pointed me towards the game’s most recent press, where WiLD producer Mitsuo Hirakawa spoke with the French publication Jeux Video. I’ve translated Hirakawa’s answers using Google Translate, so please excuse some of the grammatical awkwardness.
“This team has a lot of energy, creativity,” he told Jeux Video. “It’s something I’ve learned over the years, identifying teams that have creative ambitions. This team is in the right direction, and we want to help them create a good PlayStation exclusivity. So we are not going to jostle them if they do not want to compromise on a subject. We wait patiently.