Solidity 0.8.28 Release Announcement

Solidity v0.8.28 is released with full support for transient storage state variables of value types, which the previous v0.8.27 could parse but not compile to bytecode, in both the IR and legacy pipelines. The release also reduces compilation cost: memory usage in IR compilation of real projects drops by up to 80%, and running time of the IR pipeline falls by up to 25%. In benchmarks, memory for openzeppelin, uniswap-v4 and eigenlayer fell 59%, 69% and 78%, respectively. Per-contract output selection is now available through the Standard JSON interface, though not the CLI.