Weighing in at 10.4GB, the patch is pretty beefy, but it seems like it'll be an important one. It apparently makes further optimisations to performance, adjusts some gameplay balancing, adds a little more visual and audio polish, and fixes a number of bugs. The patch will also include a couple of extra tutorials — viewable in the pause menu, by the way.
The game runs very well without the patch, so we're excited to fire it up with the update installed to see the changes. Will you be playing Returnal on launch day? Break the cycle in the comments section below.