This is just a single bug fix for a possible downstream compatibility fix we introduced. If you aren't encountering the problem, you don't need to rush to upgrade.
Release 3.0.6.1 (May 2, 2025) -- compared to 3.0.6.0
- fix: Restore OIIO_AVX512ER_ENABLED preprocessor symbol. Its absence could break backwards source compatibility if anyone was using it, even though it was useless and broken. Where compatibility goes, better safe than sorry. #4735