Every Extended Matrix release.
Two lines run in parallel: a Long-Term Support line for production and a development line for what comes next. Older releases stay available for projects that need to be reopened.
Lines that never declared an end of support run to the end of support of the Blender they were built on. EM 1.6 will follow the next Blender LTS, expected July 2027.
- 1.6 EM 1.6 — In developmentIn development
Active development line that follows the 1.5 LTS cut. No stable release yet — features, APIs and branch URLs may still move before the 1.6 cut. Track day-to-day status on the EM dev tracker. New projects should still start from EM 1.5 LTS.
- 1.5 EM 1.5 — Long-Term SupportRecommended · LTS
Recommended for all new Extended Matrix projects — if you are unsure where to start, start here. Current Long-Term Support line, working on Blender 4.5 LTS or later (Mac Intel users included, via Blender 4.5 LTS). Headline: Representation Models management with advanced epoch visualization, Landscape mode, CronoFilter, Document Manager, Proxy Box Creator, and the first fully featured 3DSC.
- 1.4 EM 1.4 — Long-Term SupportLegacy LTS
Outgoing Long-Term Support release — recommended only for legacy projects already authored against this version. New projects should start from EM 1.5 LTS. Pinned to Blender 4.5 LTS (the final LTS of the 4.x series), supported through end-of-life for in-flight projects, archive deposits and reproducibility of published work.
- 1.3 EM 1.3Archived
Legacy stable release. Refinements to the formal language, expanded paradata vocabulary, stability improvements. Use only if you are maintaining a project authored under 1.3 — for new work, prefer 1.4 LTS.
- 1.2 EM 1.2 — Five Steps reconstructive methodArchived
Formalisation of the reconstructive workflow as a five-step methodological pipeline. Use only to read or maintain older project data — for new work, prefer the current LTS line.
- 1.1 EM 1.1Archived
Early refinement of the formal language after the 2015 foundation. Use only to read or maintain older project data — for new work, prefer the current LTS line.
- 1.0 EM 1.0 — FoundationArchived
First public release of the Extended Matrix formal language — and the methodological foundation of every subsequent version. The 2015 Journal of Archaeological Science paper is the canonical reference for the method.