Geode aims for about one minor release a year, and usually a few patch releases in between. After a release is proposed on the dev list and a Release Manager has volunteered, shipping typically takes a month or more. See Backporting Tips if you'd like to include a major/critical fix in a release after the support branch has been cut.
Upcoming Releases
Plans may change, but here's what might be next.
Apache Geode 1.16.0
Release Manager:
Branch: develop
Label: blocks-1.16.0
Status: active (accepting contributions but no definite plans if or when to ship...perhaps 2023 or 2024? maybe as 1.16 or maybe as 2.0?)
Apache Geode 1.15.0
Release Manager: Owen Nichols (see email)
Branch: support/1.15
Label: blocks-1.15.0
Status: frozen in preparation for release (may be ready to begin voting on RC1 as early as June 15)
Apache Geode 1.14.5
Release Manager:
Branch: support/1.14
Label: blocks-1.14.5
Status: passive (backporting allowed, but a Release Manager has not yet volunteered)
Apache Geode 1.13.9
Release Manager:
Branch: support/1.13
Label: blocks-1.13.9
Status: inactive (backporting may be skipped, as no further patch releases are likely)
Apache Geode 1.12.10
Release Manager:
Branch: support/1.12
Label: blocks-1.12.10
Status: passive (backporting allowed, but a Release Manager has not yet volunteered)