BREAKING: Use chacha8rand as the default RNG.
The old default generator is available under core:math/rand in rand_pcg.odin in case you require a seed to return the same sequence as before.
New Language Features
Introduce #all_or_none for structs, which requires that struct literals have all or none of the fields set
New Compiler Improvements
Use SIP hash as name canonicalization hash
Moved checking of -vet-unused-procedures and -vet-packages flags to after all flags are parsed
Fixes for 32 bit with regards to typeid
Fix #5894
Remove #no_copy
Don't check proc signature similarity for imported Objective-C methods
Ubuntu arm ci and posix fixes
Fix allocation of anonymous globals
Fix #5967: Incorrect stack overflow warning for by ref switches over unions
Skip collision panic when package names aren't unique
New Packages
Add vendor:curl
Package Improvements
Improve docs for stable sort procedures
Fix: linalg.quaternion_from_forward_and_up
Clone unquoted strings in encoding/json
Add missing SetLayeredWindowAttributes
Add io uring API
Add FreeLibraryAndExitThread in kernel32. Add EnumProcessModules in psapi
Fix typo in NS.String_initWithCString
Remove the Darwin-specific paths from thread_unix
Fix thread_act_t size
Fix: make choice_bit_set respect bit_set domain
math/rand: Add range-based number generation procedures
Fix is_pointer_internally not handling Named Types
Faster big.itoa
Add Xoshiro256 RNG
Add LockFileEx/UnlockFileEx and related flags
Fix vendor:stb/image resize alpha_channel parameter type to c.int
Move some OS General_Error values to io.Error
Fix out of bounds access when parsing end_pos
Add WSASendTo and WSARecvFrom
Update d3d12 bindings for D3D12_FEATURE_D3D12_TIGHT_ALIGNMENT
Add NSWindow coordinate space conversion bindings
Don't build log allocator file on freestanding targets
Adjust docs links for satellite SDL libraries
Increase base64 decoding table size to 256, preventing out of bounds reads
vendor/xlib: a few more IM-related procedures and constants
add math.sign and math.sign_bit overloads for int types
Implement more Linux syscalls
Add SIO_UDP_CONNRESET winsock constant
os2.File_Stream
Other
Fix up macOS CI
Full Changelog: dev-2025-11...dev-2025-12
