The stackage curator team has started preparations for an LTS major bump which will include ghc-8.6.5. This is not a change in GHC version number from the current LTS 13 series. In addition to allowing new, breaking changes of packages into an LTS release, this LTS 14 will be the first LTS using the new curator tool.
To give everyone some time to prepare, we are announcing the planned release date as approximately two to four weeks from the date of this post.
Getting your package into the nightly snapshot will ensure its inclusion in LTS 14 as well. To add your package, please submit a PR to commercialhaskell/stackage. To add your package to LTS 14 after it’s released, please open a new issue on commercialhaskell/lts-haskell. Please feel free to contact the stackage curators with any questions you may have via the stackage mailing list, or the stackage gitter chat.
For more insight into how stackage curators handle these sorts of things, see: the LTS major bump process.