Modernize wiki: branch-aware release process, archive May 2026 summit, add Design Documents Release Process: the release instructions only described the autotools flow, which is correct for 9.2.x but not for 10.x and later. Document both: 9.2.x keeps configure.ac (TS_VERSION_S / TS_VERSION_N) with 'make changelog' and 'RC=1 make rel-candidate'; 10.x and later set the version in CMakeLists.txt and use the equivalent cmake targets. Note that the CMake build has no changelog target. Drop the reference to trafficserver.spec, which no longer exists on any active branch. Drop the hardcoded version list in favor of the Downloads page and roadmap so it cannot go stale. ATS Summit May 2026: mark as concluded, remove the closed call for talks and the pending meeting link. Getting Started: complete the CMake preset table (asan, tsan, hardened, autest-uds) and note the ci-* and branch-* families. Design Documents: new page covering in-flight proposals, an index of accepted designs in the developer guide, and how to take a design from draft to published. Footer: copyright 2025 -> 2026.