I estimate 2 more months of testing and deliberating on this one.
Then 1 more month at best to get the next testnet even close to ready... probably 2... and if we're lucky 2-3 months of testing the next hard fork. That puts us pretty well into 2020 ... and that's if things go well.

I hope I'm wrong because sadly the light accounts are really needed soon and I would love to see them put into this hard fork with the assumption they're very limited accounts anyway and probably mostly just addresses to send money to etc. But then again if they don't enable an account to make comments then I guess we may not need them that much anyway.