This release is meant to fix the following issues (regressions / silent correctness):

Torch.compile:

• Remove runtime dependency on JAX/XLA, when importing torch.__dynamo (https://github.com/pytorch/pytorch/pull/124634)
• Hide Plan failed with a cudnnException warning (https://github.com/pytorch/pytorch/pull/125790)
• Fix CUDA memory leak (https://github.com/pytorch/pytorch/pull/124238) (https://github.com/pytorch/pytorch/pull/120756)

Distributed:

• Fix format_utils executable, which was causing it to run as a no-op (https://github.com/pytorch/pytorch/pull/123407)
• Fix regression with device_mesh in 2.3.0 during initialization causing memory spikes (https://github.com/pytorch/pytorch/pull/124780)
• Fix crash of FSDP + DTensor with ShardingStrategy.SHARD_GRAD_OP (https://github.com/pytorch/pytorch/pull/123617)
• Fix failure with distributed checkpointing + FSDP if at least 1 forward/backward pass has not been run. (https://github.com/pytorch/pytorch/pull/121544) (https://github.com/pytorch/pytorch/pull/127069)
• Fix error with distributed checkpointing + FSDP, and with use_orig_params = False and activation checkpointing (https://github.com/pytorch/pytorch/pull/124698) (https://github.com/pytorch/pytorch/pull/126935)
• Fix set_model_state_dict errors on compiled module with non-persistent buffer with distributed checkpointing (https://github.com/pytorch/pytorch/pull/125336) (https://github.com/pytorch/pytorch/pull/125337)

MPS:

• Fix data corruption when coping large (>4GiB) tensors (https://github.com/pytorch/pytorch/pull/124635)
• Fix Tensor.abs() for complex (https://github.com/pytorch/pytorch/pull/125662)

Packaging:

• Fix UTF-8 encoding on Windows .pyi files (https://github.com/pytorch/pytorch/pull/124932)
• Fix import torch failure when wheel is installed for a single user on Windows(https://github.com/pytorch/pytorch/pull/125684)
• Fix compatibility with torchdata 0.7.1 (https://github.com/pytorch/pytorch/pull/122616)
• Fix aarch64 docker publishing to https://ghcr.io (https://github.com/pytorch/pytorch/pull/125617)
• Fix performance regression an aarch64 linux (https://github.com/pytorch/builder/pull/1803)

Other:

• Fix DeepSpeed transformer extension build on ROCm (https://github.com/pytorch/pytorch/pull/121030)
• Fix kernel crash on tensor.dtype.to_complex() after ~100 calls in ipython kernel (https://github.com/pytorch/pytorch/pull/125154)

Release tracker https://github.com/pytorch/pytorch/issues/125425 contains all relevant pull requests related to this release as well as links to related issues.