It looks like the PTR testing is heading towards it’s final phase. Zorbix just posted on twitter:
Character Copy will be disabled on PTR shortly as we move towards the end of 6.2 PTR testing.
Read more: http://t.co/TyoxPwz8we
— Zorbrix (@Zorbrix) June 9, 2015
“We’ve reached a point in 6.2 testing where going forward, builds deployed to PTR are going to be flagged as “release” versions.”
This makes an end of June / start of July release a lot more likely.