There is a PR, ready to be merged, that adds the possibility of passing a tuple of arrays in the 'out' kwarg to ufuncs with multiple outputs:

The new functionality is as follows:

* If the ufunc has a single output, then the 'out' kwarg can either be a single array (or None) like today, or a tuple holding a single array (or None).

* If the ufunc has more than one output, then the 'out' kwarg must be a tuple with one array (or None) per output argument. The old behavior, where only the first output could be specified, is now deprecated, will raise a deprecation warning, and potentially be changed to an error in the future.

* In both cases, positional and keyword output arguments are incompatible. This has been made a little more strict, as the following is valid in <= 1.9.x but will now raise an error:

np.add(2, 2, None, out=arr)
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