Its not publicly available...as per Gary http://viewfromthewing.boardingarea.com/2015/01/15/truth-behind-hyatts-new-diamond-status-challenge-offer/
You need to request it from a hotel.
Meaning i need to be on a stay or walk in and ask the concierge?
You need to be referred by a Manager from a Hyatt hotel. Not everyone even aware about this promotion going on neither at Gold Passport nor at the hotels. They don't call it Diamond challenge but Hyatt Gold Passport Elite Tier offer.
Thanks.
Or just use my diamond status
Using others status is fine, but would like to get my own at some point.
Challenge has been renewed?
If you get the Diamond challenge: Can the 12 nights be award nights or just cash/C&P? Will the night credit earned from opening the CC count towards these nights?
No award nights, and no.
Back open to everyone - http://upgrd.com/thetripsherpa/hyatt-diamond-challenge-is-back-and-open-to-everyone.html
No.