The original intent of the PTR was to collect feedback from players about what did and did not work, before finalizing what was to be included in the patch. Hopefully, the closure means that enough feedback has flowed in, and we will soon be seeing the patch on normal Battle-Net realms, along with the obligatory ladder reset.
However, this could turn out to be a PTR update. Due to the fact that the PTR is meant to gather feedback, Blizzard will most likely release any updates directly to the PTR, to be met with more user comments. This may not even be the final version of the PTR coming up, due to software iteration, Blizzard may have to release yet another more refined version of the patch before going live.
This would be a good time to make use of our skill calculator, which is up to date with the 1.13 build. However, keep in mind that due to the nature of the PTR, these values and statistics may change once the final version is released, hopefully for the better.
So, while this may not meant that the patch is coming up soon, it still means we're getting close.