# Missing Notable Changes in 2026.1? **URL:** \ **Category:** IntelliJ Platform\ **Created:** [January 31, 2026, 8:13pm UTC](https://platform.jetbrains.com/t/missing-notable-changes-in-2026-1/3614 "2026-01-31T20:13:03Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![joshtau](https://sea1.discourse-cdn.com/flex001/user_avatar/platform.jetbrains.com/joshtau/32/1840_2.png) [@joshtau](https://platform.jetbrains.com/u/joshtau)\ **Post date:** [January 31, 2026, 8:13pm UTC](https://platform.jetbrains.com/t/missing-notable-changes-in-2026-1/3614/1 "2026-01-31T20:13:03Z")
We’re told in “[Keeping Plugins Compatible](https://platform.jetbrains.com/t/keeping-plugins-compatible/326)” to keep up to date with notable changes / breaking changes. I can’t see 2026.x on either of the docs post (I can only post 2 links..): > `[https://plugins.jetbrains.com/docs/intellij/``](https://plugins.jetbrains.com/docs/intellij/%60%60) - `/api-notable.html` - `/api-changes-list.html` There also isn’t tag/sources posted for the latest EAPs (`https://github.com/JetBrains/intellij-community/tags`) - this is painful, we have these tags for example for IDEA: ```auto idea/2025.3-eap-1 idea/2025.3-eap-2 idea/2025.3-eap-3 idea/2025.3-eap-4 idea/2025.3-eap-5 idea/2025.3-eap-6 idea/2025.3-eap-7 idea/2025.3-eap-8 idea/2026.1-eap-1 ``` Is this no longer going to be provided? It’s the best way to get sources at the specific EAP version, correct? ---
**Author:** ![yuriy.artamonov](https://sea1.discourse-cdn.com/flex001/user_avatar/platform.jetbrains.com/yuriy.artamonov/32/48_2.png) [@yuriy.artamonov](https://platform.jetbrains.com/u/yuriy.artamonov)\ **Post date:** [January 31, 2026, 8:20pm UTC](https://platform.jetbrains.com/t/missing-notable-changes-in-2026-1/3614/2 "2026-01-31T20:20:53Z")
Tags are not published only temporary due to our ongoing infrastructure migration and we have no breaking changes in public APIs in 2026.1 EAP yet ---
**Author:** ![joshtau](https://sea1.discourse-cdn.com/flex001/user_avatar/platform.jetbrains.com/joshtau/32/1840_2.png) [@joshtau](https://platform.jetbrains.com/u/joshtau)\ **Post date:** [January 31, 2026, 8:22pm UTC](https://platform.jetbrains.com/t/missing-notable-changes-in-2026-1/3614/3 "2026-01-31T20:22:32Z")
Branch should be okay, right? e.g `261.19799`? (Thanks for replying on a weekend as well 🫶 ) ---
**Author:** ![joshtau](https://sea1.discourse-cdn.com/flex001/user_avatar/platform.jetbrains.com/joshtau/32/1840_2.png) [@joshtau](https://platform.jetbrains.com/u/joshtau)\ **Post date:** [January 31, 2026, 9:27pm UTC](https://platform.jetbrains.com/t/missing-notable-changes-in-2026-1/3614/4 "2026-01-31T21:27:15Z")
> no breaking changes in public APIs in 2026.1 EAP yet We’ve seem to have found breaking changes in 2026.x/261/ (seems to be in `261.19799`) in the `intellij-elixir` plugin (`https://github.com/KronicDeth/intellij-elixir`) plugin. In `platform/core-api/src/com/intellij/openapi/editor/FoldingGroup.java` - [intellij-community/platform/core-api/src/com/intellij/openapi/editor/FoldingGroup.java at 261.19799 · JetBrains/intellij-community · GitHub](https://github.com/JetBrains/intellij-community/blob/261.19799/platform/core-api/src/com/intellij/openapi/editor/FoldingGroup.java)), this commit: [cleanup foldings (part of IJPL-222955) · JetBrains/intellij-community@42ebb49 · GitHub](https://github.com/JetBrains/intellij-community/commit/42ebb491eaab18641ad8e40fed7936dba86fda91) made changes to `newGroup` - [cleanup foldings (part of IJPL-222955) · JetBrains/intellij-community@42ebb49 · GitHub](https://github.com/JetBrains/intellij-community/commit/42ebb491eaab18641ad8e40fed7936dba86fda91#diff-60813884cf74c480fe5d936ad5bb476bb9f25dfa271757d11991a4388dda0ea8R26) , which seems to be a breaking change? We’re getting a test failure `here` - [Add support for 2026.1 EAP, 2025.3.2 version bumps · KronicDeth/intellij-elixir@3786bcd · GitHub](https://github.com/KronicDeth/intellij-elixir/actions/runs/21550688898/job/62099115036?pr=3767#step:7:638)) for it: ```auto e: file:///home/runner/work/intellij-elixir/intellij-elixir/src/org/elixir_lang/folding/Builder.kt:260:75 Argument type mismatch: actual type is 'String?', but 'String' was expected. ``` Code: /src/org/elixir\_lang/folding/Builder.kt#L257-L261 [intellij-elixir/src/org/elixir\_lang/folding/Builder.kt at 7cc76757e6e496dc220e9f50c1a9aec30c7c5952 · joshuataylor/intellij-elixir · GitHub](https://github.com/joshuataylor/intellij-elixir/blob/7cc76757e6e496dc220e9f50c1a9aec30c7c5952/src/org/elixir_lang/folding/Builder.kt#L257-L261) ```kotlin val moduleAttributeName = atNonNumericOperation.moduleAttributeName() val foldingGroup = foldingGroupByModuleAttributeName.computeIfAbsent(moduleAttributeName) { debugName: String? -> FoldingGroup.newGroup(debugName) } foldingDescriptorList.add( ``` (Again, as a new member I can’t post links, sorry for the weird link formatting, as I can’t post markdown links). ---
**Author:** ![yuriy.artamonov](https://sea1.discourse-cdn.com/flex001/user_avatar/platform.jetbrains.com/yuriy.artamonov/32/48_2.png) [@yuriy.artamonov](https://platform.jetbrains.com/u/yuriy.artamonov)\ **Post date:** [February 1, 2026, 3:17pm UTC](https://platform.jetbrains.com/t/missing-notable-changes-in-2026-1/3614/5 "2026-02-01T15:17:08Z")
> [@joshtau](#): > > which seems to be a breaking change This commit adds `@NotNull` for result and parameter which is only source-incompatible with Kotlin code that passes `null` there, while fully binary-compatible and will not break existing plugin versions. ![grafik](https://us1.discourse-cdn.com/flex001/uploads/jetbrains_platform/original/2X/2/2fe2713b69428bc6e179e10dee6d672cdfac7a08.png) Incompatible API Changes in the documentation is the last resort for us when we cannot avoid breaking binary compatibility. ---
**Author:** ![yuriy.artamonov](https://sea1.discourse-cdn.com/flex001/user_avatar/platform.jetbrains.com/yuriy.artamonov/32/48_2.png) [@yuriy.artamonov](https://platform.jetbrains.com/u/yuriy.artamonov)\ **Post date:** [March 5, 2026, 12:32pm UTC](https://platform.jetbrains.com/t/missing-notable-changes-in-2026-1/3614/6 "2026-03-05T12:32:54Z")
While we are writing down more Notable API changes one can now track API changes of the platform in YouTrack: [https://youtrack.jetbrains.com/issues?q=tag:%20ij-api%20project:%20IJPL](https://youtrack.jetbrains.com/issues?q=tag:%20ij-api%20project:%20IJPL)