Poor mix emerges next month (7)

I believe the answer is:

proximo

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'next month' is the definition.
(I've seen this before)

'poor mix emerges' is the wordplay.
'poor mix' anagrams to 'PROXIMO'.
Though, I'm not sure how the anagram is indicated.

Can you help me to learn more?

(Another definition for proximo that I've seen is " Of next month".)

I've seen this clue in the Sydney Morning Herald.

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