Hyatt is offering a promotion for new member, if you enroll and make 2 stays within 90 days, you will get a free night valid worldwide.
However, Hyatt Diamond member desk also confirmed that the famous "Faster Free night" promotion is coming back on Sept 1st, 2008-Dec 31st 2008. You will also get a free night after 2 stays by paying with MasterCard.
Currently, Hyatt.com has not release the ""Faster Free night" promotion yet,so enroll now will get u the first free night promotion, then when hyatt release "Faster Free night", you will enroll 2 promotions at the same time.
The reason I ask you to enroll hyatt program now is because once the ""Faster Free night" releases, the first free night promotion will be gone.