OrderedDicts have some convenience methods and features that ordinary dicts don't have.
But seriously: It’s no longer an implementation detail that dictionaries are ordered in Python. It’s a specification of how Python works.
Makes you think what other parts of Python have become obsolete.
the insertion-order preservation nature of dict objects has been declared to be an official part of the Python language spec.
I would argue that OrderedDict have more chances to be depreciated than dict becoming unordered again, since there is now little value to keep OrderedDict around now (and the methods currently specific to UnorderedDict could be added to dict).