General

• Dark mode! (big thank you to @tom-englert in #2347)
• Building ILSpy for .NET 5 is now possible (see multitargeting.props.template)
• Added inline display of CustomDebugInformation table entries in metadata
• Add metadata tree nodes for blob, guid, string and user string heap

Contributions

• Performance improvements in DataGrid filter (thanks to @tom-englert)
• Adjust fitness calculation for destructors (by @MikeFH in #2344)
• Refactored insertion of search results (by @MikeFH in #2335)
• Use correct URL format in Search MSDN command (by @yyjdelete in #2343)
• Warning fixes (by @riQQ in #2345)
• Fixed ConnectionIdRewritePass (by @wwh1004 in #2327)

Bug fixes

• PDBGen: Ignore duplicated ILFunctions (see 5a8b488)
• #2314: ILSpy incorrectly resolves a runtime dependency when dll is present in both WindowsDesktop.App and NETCore.App
• #1648 and #2133: Use simple assembly names for KnownThings to allow the resolver to use the relative framework version.
• #2349: Use proper ExpressionType with DynamicCompoundAssign.
• #1512: XmlDocumentationProvider Unable to load some XML files to have special characters
• #2342: Do not generate empty names for foreach loop variables.
• #2340: Do not traverse assemblies with load errors in AssemblyList.GetAllAssemblies()
• #2356: Can't navigate if switch language in Analyze panel.
• Improved decompilation of rethrow/throw and finally blocks in async methods. (see #1749, #2339 and #2353)
• And many other fixes, for a full list click here.