On behalf of the maintainers team I'm happy to announce that two new bytestring versions have been released: * bytestring-0.11.5.0 is expected to be the last release in the bytestring-0.11 series. * bytestring-0.12.0.0 bundles all of the planned breaking changes that have been in the pipeline for the last few years. Highlights from the changelog (https://github.com/haskell/bytestring/blob/0.12.0.0/Changelog.md): * Some recently-discovered bugs in the SIMD implementations of isValidUtf8 have been fixed. * With bytestring-0.12.0.0, ShortByteString can now be safely coerced to or from the ByteArray type. * Many functions returning StrictByteString can now return their results unboxed. Many people contributed their time and effort to make this release happen. Thanks to all of them! Just to name a few, in no particular order: * Viktor Dukhovni * Vaibhav Sagar * Simon Jakobi * Matthew Craven * Andrew Lelechenko * Sergey Vinokurov * Koz Ross * Every contributor to past bytestring releases Happy Haskelling! ~-Matthew Craven