Which studio is building Diablo 2 Resurrected?

Blizzard wrote:

It's been a great partnership. We've actually worked with Blizzard for a while now, couple years.. even starting with some Battle.net integration type things... it just seemed like a perfect match for us to work together.

Rob Gallerani - Lead Designer 03:04 19th Feb 2021

These are the guys that produced the remasters of Tony Hawks Pro Skater (Metacritic 89) and Crash Bandicoot (Metacritic 80) - both very well received titles that were faithful to the originals and performed well on launch. This bodes well.