Jeff it’s the same version 2.7.2 installed by default on OSX 10.8.5 mentioned in the two posts your pointed.
Now, as we are talking about a Rhino Mac release, I am sorry to say that I, as a user, should not have to upgrade to whatever other version of Python or OSX for the matter.
In one of the two posts, Steve was talking about making a " search for the standard library " look for different locations. Jeff just gave me an indication that a fix has not yet been implemented, and as such the version 5.0.1 of Rhino Mac has a bug (sorry Steve).
I am evaluating this release, and isn’t it precisely the purpose of an evaluation to find out if everything is working as it is supposed to ? Especially if someone is going to pay for it … There is no doubt people at McNeel understand pretty well the difference between a WIP and a product, and we are talking product here. I doubt they will ever ask a prospect to have all its Mac upgraded in order to run Rhino.