Will OrderedDict become redundant in Python 3.7?

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No it won’t become redundant in Python 3.7 because OrderedDict is not just a dict that retains insertion order, it also offers an order dependent method, OrderedDict.move_to_end(), and supports reversed() iteration*.

Moreover, equality comparisons with OrderedDict are order sensitive and this is still not the case for dict in Python 3.7, for example:

>>> OrderedDict([(1,1), (2,2)]) == OrderedDict([(2,2), (1,1)]) 
False
>>> dict([(1,1), (2,2)]) == dict([(2,2), (1,1)]) 
True

Two relevant questions here and here.

* Support for reversed() iteration of regular Python dict is added for Python 3.8, see issue33462

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