Honestly, I don't think these are intended or permanent. If the Class is indeed broken on the PTR, it would make sense that our spells would be too. And, seeing as ALL of our instant casts seem to have gotten a refurbished and unwanted extra half second, Yupp definitely looks like something broke to me.
Also, notice how all of the instant shots that DON'T share a CD with a non-instant shot are still able to be shot in movement? But the ONE shot that happens to be connected to an ordinarily non instant cast shot can't be shot in motion(Aimed shot, which is Instant, while Multi is not)? I think somewhere in the twisting nether of computer programs our spells got a bit messed up, and Aimed is likely replicating Multi a bit.
Sig made by the Wonderful Serenith!
"You cannot judge me, I am Justice itself! We were meant for more than this, to protect the innocent. But, if our precious laws bind you all to inaction, then I will no longer stand as your brother." - Tyrael