when does ZK plan to release a stable version for 3.5.x?

[Zhou, Gang]

Hey,

As we have a requirement that would plan to use Zookeeper 3.5.x because this 
version had fixed some bugs. So I'd like to know that when would the Zookeeper 
plan to release a stable version for 3.5.x? Thank you very much.

Br,
ZG