Update: PDX Deals Guy has confirmed that he was told you can also request the match by sending an email to Goldpassport@Hyatt.com with all of the relevant information. He has also confirmed that received a match through 2017 via Twitter.
View from the Wing is reporting that Hyatt is instantly granting elites of other programs Hyatt Diamond status through February, 2017 if they can prove at least one stay.
While this most likely will not last long, at least one reader has confirmed being granted the status instantly after requesting it.
If you are interested then hop on Twitter and respond to this tweet. Good luck!