# Scala 2.13.11The Scala team at Lightbend is pleased to announce the availability of Scala 2.13.11.The following changes are highlights of this release: ### Collections * Faster `Vector` concatenation ([#10159](https://github.com/scala/scala/pull/10159) by [@ansvonwa](https://github.com/ansvonwa)) * New `LinkedHashMap`/`LinkedHashSet` implementation ([#10221](https://github.com/scala/scala/pull/10221) by [@liang3zy22](https://github.com/liang3zy22)) ### Compatibility * Support JDK 21 by upgrading to ASM 9.5 ([#10363](https://github.com/scala/scala/pull/10363), [#10184](https://github.com/scala/scala/pull/10184) by [@Philippus](https://github.com/Philippus)) * Support Java 17 `sealed` in Java sources and classfiles ([#10348](https://github.com/scala/scala/pull/10348), [#10105](https://github.com/scala/scala/pull/10105) by [@som-snytt](https://github.com/som-snytt) ### Align with Scala 3 * Accept `implicit _`, `implicit (x: Int)` in lambdas, like Scala 3 does ([#10327](https://github.com/scala/scala/pull/10327) by [@som-snytt](https://github.com/som-snytt)) * Inherited members no longer take precedence over outer definitions ([#10220](https://github.com/scala/scala/pull/10220), [#10339](https://github.com/scala/scala/pull/10339))
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