It's now available on NuGet. Going to run the memory leak reproduction suite that users created for #3430 and make sure there aren't any outstanding issues there before upgrade.

Release notes for DotNetty v0.4.8:

0.4.8 April 24, 2018

• Unsafe direct buffers
• HTTP 1.1 codec
• FlowControlHandler
• Channel pool
• Better Buffer-String integration
• Better shutdown handling for sockets
• Realigned Redis codec
• Fixes to LenghtFieldPrepender, LengthFieldBasedDecoder
• Fixes to libuv-based transport
• Fixes to buffer management on flush for .NET Core
• Fixes to ResourceLeakDetector