Meaning
The formal distribution and launching of a new or updated version of a software product to users.
Three examples from work
Release planning
PMOur mobile app release is scheduled for Thursday morning.
LeadWe tagged version 3.2.0 and submitted it for Apple App Store review.
Release notes
PODid marketing prepare the public release notes for the new dashboard?
Content LeadYes, highlighting the speed improvements and export feature.
Quality gate
QA LeadWe completed full regression testing; the release candidate is approved.
PMAwesome, let's proceed with gradual rollout.
Can be a noun ('major release', 'release notes') or a verb ('release a new version'). Collocations: 'release candidate', 'release train'.