TL;DR<p>* Clients will stay simple, RESP3 is backward compatible with RESP2<p>* ACLs are mostly an anti-fool protection.<p>* True multi-threading is impossibly hard to implement, but there will be some ad-hoc workarounds.<p>* Better persistence will be getting better.<p>* Existing data structures solve everything, so their number won't be extended.<p>* Read @antirez twitter to stay tuned.