For Aurora, you mean? They support 5.7 for RDS, but a consequence of forking MySQL for Aurora is that it's unlikely that new MySQL features will quickly be incorporated into Aurora/MySQL.
For Aurora, yes. I understand the tradeoff and happy to stay on Aurora. Found this forum post stating that 5.7 compat will come next year
They already announced a year ago that it's something they're working on, but also that they would not provide a timeline.