A: The original "Fixed" group released v1.0 in late 2023. As of now, v2.0 (with Dolby Vision FEL) is in community testing but not publicly available.
The original SSIS-448 was shot on high-end Sony Venice cameras (capable of 6K raw). However, the initial consumer release downsampled this to 1080p for Blu-ray. The "Fixed" 4K version returns to the . This is not an algorithm guessing pixels; it is a direct scan of the source data.
In short, is the definitive visual edition—what the original release should have looked like.
Enjoy the clarity.