Unlike traditional software "betas," the 1.5.0 builds were . Every time a developer committed a change or a fix to the project’s master branch, an automated system would compile a fresh executable. These daily (or sometimes hourly) builds carried the 1.5.0 version tag.
Report compiled from PCSX2 development history, GitHub commit logs, and community wiki documentation (2016–2019 era). pcsx2 1.5.0 dev build