Interesting question, as the current build's python is broke, and has been that way for some time.
So falling back to the old standard of "if it ain't broke, don't fix it" really doesn't apply here.
On the other hand will the next version of Python offer the same functionality? Probably... eventually, but starting out a lot of the modules that were available for the old version wont be backwards compatible.
This is actually an issue that many programs that use scripting are finding these days, for example Blender use's an older version of python, but the develops won't upgrade for the fact that existing scripts made will be broke in a new version. Personally I've had this same issue with Gimp, as new versions come out, the very scripting language created for it is changed, breaking existing scripts, loosing functionality.