2.6 released 4 February 2019, latest 2.6.14.
Vue 2.6 reached end of life on 1 July 2022.
What changed
Vue 2.6 refined the Vue 2 programming model rather than introducing a new major-version architecture. It added the v-slot directive as the unified syntax for named and scoped slots, dynamic arguments for directives such as v-bind and v-on, and Vue.observable for creating an observable object outside a component instance. It also improved scoped-slot compilation and related runtime behavior. Applications using the older slot and slot-scope attributes remained supported, so most upgrades from earlier Vue 2 releases were incremental.
What staying costs
This cycle has reached end of life, so Vue 2.6 no longer receives upstream fixes for newly discovered defects, security issues, or compatibility problems. Keeping it increases the chance that browser, tooling, dependency, and plugin changes will require local workarounds with no maintained upstream path. The longer an application retains Vue 2-era patterns such as filters, the event bus pattern, legacy slot syntax, or assumptions about Vue 2 reactivity, the larger and riskier a later move to Vue 3 becomes. Teams also need to account for the version coupling of Vue 2 runtime packages: mismatches between vue and vue-template-compiler can cause build or runtime failures.
What to do
Treat migration off Vue 2.6 as planned technical work rather than routine dependency maintenance. Inventory Vue packages, build tooling, component libraries, and internal components; identify dependencies that require Vue 2 or rely on undocumented internals. First bring the application to the latest compatible Vue 2.7 release where practical, keeping vue and vue-template-compiler aligned, and remove deprecated or legacy patterns while expanding automated component and end-to-end coverage. Then evaluate the Vue 3 migration build, @vue/compat, to surface incompatible behavior incrementally. Prioritize conversion of filters, legacy slot usage, Vue 2-only reactivity assumptions, and incompatible third-party components, and validate the migration against production-like builds before replacing the compatibility build with standard Vue 3.
We can tell you what moving off Vue 2.6 involves.
What it takes to move off Vue 2.6 depends on what you built on it — the version you are on, how much depends on it, and how much of the work is mechanical. Leave your email with this version and we can tell you what that looks like for you.