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• Limit the size of generics._generic_types_cache and generics._assigned_parameters to avoid unlimited increase in memory usage, #4083 by @samuelcolvin
• Add Jupyverse and FPS as Jupyter projects using pydantic, #4082 by @davidbrochart
• Speedup __isinstancecheck__ on pydantic models when the type is not a model, may also avoid memory "leaks", #4081 by @samuelcolvin
• Fix in-place modification of FieldInfo that caused problems with PEP 593 type aliases, #4067 by @adriangb
• Add support for autocomplete in VS Code via __dataclass_transform__ when using pydantic.dataclasses.dataclass, #4006 by @giuliano-oliveira
• Remove benchmarks from codebase and docs, #3973 by @samuelcolvin
• Typing checking with pyright in CI, improve docs on vscode/pylance/pyright, #3972 by @samuelcolvin
• Fix nested Python dataclass schema regression, #3819 by @himbeles
• Update documentation about lazy evaluation of sources for Settings, #3806 by @garyd203
• Prevent subclasses of bytes being converted to bytes, #3706 by @samuelcolvin
• Fixed "error checking inheritance of" when using PEP585 and PEP604 type hints, #3681 by @aleksul
• Allow self referencing ClassVars in models, #3679 by @samuelcolvin
• Fix issue with self-referencing dataclass, #3675 by @uriyyo
• Include non-standard port numbers in rendered URLs, #3652 by @dolfinus
• Config.copy_on_model_validation does a deep copy and not a shallow one, #3641 by @PrettyWood
• fix: clarify that discriminated unions do not support singletons, #3636 by @tommilligan
• Add read_text(encoding='utf-8') for setup.py, #3625 by @hswong3i
• Fix JSON Schema generation for Discriminated Unions within lists, #3608 by @samuelcolvin