I taught a python class this week with Python 2.7.7 and the learners found this change to be an impediment to usability.

The filename and fullpath are the most important pieces of information in the title bar.   They are now obscured by the version information which is somewhat unimportant (it has already been shown in the shell window and it is uncommon to run multiple versions of python using IDLE at the same time).

Looking to Microsoft Excel and Word as comparative examples, they only show the document name.

I conclude that this change should be reverted.  For the time being, I can't continue to use IDLE in 2.7.7 to teach with.  Not seeing the filename is especially important when many small windows are open (as they usually are during tdd and pdb sessions).