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- [Custom type errors](proposal/custom-type-errors). ([\#9637](https://gitlab.haskell.org//ghc/ghc/issues/9637), [ Phab:D1236](https://phabricator.haskell.org/D1236)).
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- Implement the `MonadFail` proposal ([\#10751](https://gitlab.haskell.org//ghc/ghc/issues/10751))
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- Support for [OverloadedLabels](records/overloaded-record-fields/overloaded-labels), allowing a form of type-directed name resolution ([ Phab:D1033](https://phabricator.haskell.org/D1033) and [ Phab:D1331](https://phabricator.haskell.org/D1331))
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### In-flight, and likely to land in time
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- Visible type application
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- Support for reasoning about kind equalities, which gives promotion of GADTs to kinds, kind families, heterogeneous equality (kind-indexed GADTs), and `* :: *`. There is some discussion in [DependentHaskell/Phase1](dependent-haskell/phase1), but that's very low-level. I (Richard) have no good user-oriented write-up yet, but there shouldn't be much in the way of new syntax -- just fewer type errors. ([ Phab:D808](https://phabricator.haskell.org/D808))
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- Implement the `MonadFail` proposal ([\#10751](https://gitlab.haskell.org//ghc/ghc/issues/10751))
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- Support for [OverloadedLabels](records/overloaded-record-fields/overloaded-labels), allowing a form of type-directed name resolution ([ Phab:D1033](https://phabricator.haskell.org/D1033) and [ Phab:D1331](https://phabricator.haskell.org/D1331))
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- A huge improvement to pattern matching (including much better coverage of GADTs), based on the work of Simon PJ and Georgios Karachalias. For more details, see [ their paper](http://research.microsoft.com/en-us/um/people/simonpj/papers/pattern-matching/gadtpm.pdf).
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- Backpack is chugging along; we have a new user-facing syntax which allows multiple modules to be defined a single file, and are hoping to release at least the ability to publish multiple "units" in a single Cabal file.
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