# PL2026 Timeline & Milestones ## PL2026 Timeline The following Gantt chart illustrates the complete PL2026 development timeline, including management activities, development phases, ALMA testing cycles, and delivery milestones. ```mermaid gantt title PL2026 Timeline dateFormat YYYY-MM-DD tickInterval 1month excludes weekends section Management %% Stakeholder Planning & Prioritization :active, des1, 2025-10-01, 2025-12-31 %% Team F2F Meeting, Charlottesville, VA :active, 2025-10-13, 5d Inform ALMA AQUA/Archive of New Products :active, milestone, 2026-05-01, 1d section Development New Features, Bugfixes, Refactoring, Testing, Documentation :active, 2026-02-01, 2026-07-01 %% VLASS Feature Dev Complete :active, milestone, 2026-02-01, 1d VLASS Branch release/2026.1.0 :active, milestone, 2026-03-06, 1d CASA Branch PL2026 :active, milestone, 2026-02-15, 1d %% ALMA/VLA Feature Dev Complete :active, milestone, 2026-07-01, 1d ALMA/VLA Branch release/2026.2.0 :active, milestone, 2026-07-01, 1d Optimization & Bugfixes :active, 2026-07-01, 2026-07-31 section ALMA Testing %% Ref. Benchmark (late-PL2025) :active, 2025-10-01, 2025-11-15 Ref. Benchmark (early-PL2026) :active, 2026-02-15, 2026-03-31 Validation Benchmark (PL2026) :active, 2026-06-15, 2026-07-31 TRR1 (pre-E2E) Observations :milestone, 2026-05-14, 1d TRR1 :test1, 2026-05-14, 2026-05-22 TRR1 Report on Data Reduction :milestone, 2026-05-22, 1d TRR2 (24h) Observations :milestone, 2026-07-09, 1d TRR2 :test2, 2026-07-09, 2026-07-23 TRR2 Report on Data Reduction :milestone, 2026-07-23, 1d Acceptance (48h) Observations :milestone, 2026-08-18, 2d Acceptance :test3, 2026-08-18, 2026-09-02 Acceptance Report on Data Reduction :milestone, 2026-09-03, 1d JAO-ARC Validation Test :test4, 2026-09-03, 2026-09-14 section Delivery %% ALMA Cycle-12 and VLA/SRDP Pipeline (2025.1.0.35, CASA 6.6.6-17-py3.10) :done, crit, milestone, 2025-10-01, 1d ALMA Cycle-12 and VLA/SRDP Pipeline patch-1 (2025.1.0.36, CASA 6.6.6-18-py3.10) :done, crit, milestone, 2026-03-01, 1d VLASS Pipeline (2026.1.0.4, CASA 6.7.1-13-py3.10+gpu) :active, crit, milestone, 2026-04-20, 1d ALMA E2E13 Pre-release :active, crit, milestone, 2026-07-10, 1d ALMA Cycle-13 and VLA/SRDP Pipeline (2026.2.0, CASA 6.7.4-py3.12) :active, crit, milestone, 2026-08-01, 1d ``` --- ## Key Milestones ### Delivery Schedule March 2026 (patch release) : **ALMA Cycle-12 and VLA/SRDP Pipeline patch-1** - Version: 2025.1.0.37 - CASA: 6.6.6-18-py3.10 - Status: Completed April 2026 : **VLASS Pipeline** - Version: 2026.1.0.4 - CASA: 6.7.1-13-py3.10+gpu - Status: Completed July 2026 : **ALMA E2E13 Pre-release** - Version: 2026.2.0 (pre-release) - Status: Planned August 2026 : **ALMA Cycle-13 and VLA/SRDP Pipeline** - Version: 2026.2.0 - CASA: 6.7.4-py3.12 - Status: Planned ### ALMA Testing Schedule May 14, 2026 : **TRR1 (pre-E2E) Observations** May 22, 2026 : **TRR1 Report on Data Reduction** July 9, 2026 : **TRR2 (24h) Observations** July 23, 2026 : **TRR2 Report on Data Reduction** Aug 18–19, 2026 : **Acceptance (48h) Observations** Sep 3, 2026 : **Acceptance Report on Data Reduction** --- ## PL2025/2026 Branching Strategy The branching diagram below illustrates the development workflow across PL2025 and PL2026 cycles, showing the relationship between the main development branch and release branches. ### Branch Overview - **Main Branch**: Continuous development with new features and improvements - **release/2025.1.0**: Stable release for ALMA Cycle-12 (CASA 6.6.6-py3.10) - **release/2026.1.0**: VLASS-focused release (CASA 6.7.1-py3.10-gpu) - **release/2026.2.0**: ALMA Cycle-13 and VLA release (CASA 6.7.x-py3.12) ### Development Phases 1. **Feature Development** - New features developed on main branch - Feature branches merged back to main - Regular integration and testing 2. **Release Branching** - Release branches created at feature freeze - Stabilization and bug fixes on release branches - Critical fixes cherry-picked back to main 3. **Maintenance** - Hotfixes applied to release branches - Important fixes backported as needed - Main branch continues with new development ```mermaid %%{init: {'logLevel': 'debug', 'theme': 'base', 'gitGraph': {'showBranches': true, 'showCommitLabel': true, 'mainBranchOrder': 1}}}%% gitGraph %% === Initial 2025 Development on Main === commit id:"feature1" commit id:"feature2" commit id:"feature3" commit id:"bugfix1" tag:"2025.0.2.14" tag:"2025.1.0.0" tag:"2025.1.1.0" %% --- Branch for 2025.1.0 Release --- branch "release/2025.1.0 (casa-6.6.6-py3.10)" order: 0 checkout "release/2025.1.0 (casa-6.6.6-py3.10)" commit id:"bugfix2" commit id:"bugfix3" tag:"2025.1.0.35" type: HIGHLIGHT checkout main %% === Continued Development on Main === commit id:"refactor1" commit id:"refactor2" branch "feature4" order: 2 checkout "feature4" commit id:"feature4-pt1" commit id:"feature4-pt2" checkout main cherry-pick id:"bugfix2" tag:"2025.1.1.x" cherry-pick id:"bugfix3" tag:"2025.1.1.27" merge "feature4" id:"merge:feature4" commit id:"feature4" commit id:"bugfix4" tag:"2025.1.1.10" commit id:"feature5" commit id:"feature6" tag:"2026.0.0.0" %% === VLASS 2026 Development === commit id:"feature7" commit id:"bugfix5" tag:"2026.0.1.0" commit id:"bugfix6" commit id:"feature8" tag:"2026.0.1.14" tag:"2026.1.0.0" tag:"2026.1.1.0" %% --- Branch for 2026.1.0 (VLASS) Release --- branch "release/2026.1.0 (casa-6.7.1-py3.10-gpu)" order: 3 checkout "release/2026.1.0 (casa-6.7.1-py3.10-gpu)" commit id:"bugfix7" commit id:"bugfix8" tag:"2026.1.0.2" commit id:"hotfix1" commit id:"hotfix2" tag:"2026.1.0.3" type: HIGHLIGHT checkout main %% === ALMA/VLA 2026 Development === commit id:"feature9" tag:"2026.1.1.1" cherry-pick id:"bugfix7" tag:"2026.1.1.2" commit id:"feature10" commit id:"feature11" tag:"2026.1.2.0" commit id:"feature12" commit id:"bugfix9" tag:"2026.1.3.7" tag:"2026.2.0.0" tag:"2026.3.0.0" %% --- Branch for 2026.2.0 (ALMA/VLA) Release --- branch "release/2026.2.0 (casa-6.7.x-py3.12)" order: 4 checkout "release/2026.2.0 (casa-6.7.x-py3.12)" commit id:"bugfix10" commit id:"hotfix3" tag:"2026.2.0.5" checkout main %% === Post-Release Maintenance & Mainline Dev === commit id:"refactor3" tag:"2026.3.0.1" commit id:"bugfix11" tag:"2026.2.0.2" cherry-pick id:"hotfix3" tag:"2026.3.0.7" commit id:"refactor4" commit id:"refactor5" checkout "release/2026.2.0 (casa-6.7.x-py3.12)" cherry-pick id:"bugfix11" tag:"2026.2.0.3" commit id:"hotfix4" tag:"2026.2.0.4" type: HIGHLIGHT ``` --- For version string format, see {doc}`devel/reference/versioning`.