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kotlinlang

I somehow remember that someone said it was internally working on a library on Kotlin and Protobuf, but can't find any reference. Can someone redirect me to the right person(s)?

<https://github.com/marcoferrer/kroto-plus>

Yes, that's a major implementation. But I thought I remember another one, internally, probably with Jet brains or Google, to be released Q4

Probably you are talking about Wire 3, but it from Square

<https://github.com/square/wire/blob/master/CHANGELOG.md#version-300-alpha01-2019-03-14>