Netty 4.0.39.Final 和 4.1.3.Final 发布了。本次发布，修改了bug，改进了性能，以及增加了一些功能。

4.0.39 和4.1.3.Final 主要修改内容如下:

• Fix JDK9 direct ByteBuffer cleaner invocation (#5538)

• Non-sticky thread groups in DefaultThreadFactory (#5533)

• Enforce Recycler limit when recycling from different threads (#5528)

• Avoid missed signals on a default promise (#5523)

• Ensure ChannelHandler.handlerAdded(...) callback is executed directly when added from ChannelFutureListener added to the registration future. (#5515)

• Not operate on serial execution assumption when using EventExecutor in the DefaultChannelPipeline.(#5506)

• Make AbstractChannel.outboundBuffer volatile (#5509)

• Fix improper synchronization in DefaultPromise (#5494)

 4.1.3.Final 的重要更新：

• DnsNameResolver search domains support (#5496)

• DefaultHttp2RemoteFlowController reentry infinite loop (#5525)

详情请看 4.0.39.Final 和 4.1.3.Final。

所有在 4.0.39.Final 的修改，都包含在了 4.1.3.Fina。而 4.1.3.Final 里程碑的修改不会影响4.0.39.Final。 

更多信息：http://netty.io/news/2016/07/15/4-0-39-Final-4-1-3-Final.html