Received the mailing also. That link have been available for several weeks now. FNBO website, not Amtrak's.I received a postcard like mailing from
Amtrak Guest Rewards
PO Box 3955
Omaha, NE 68103-0955
It said my new card is arriving soon, and then a few instructions. It also invited me to visit our welcome center at card.fnbo.com/amtrakguestrewards/faq. This took me to a website that looked like a barebones, third party sales pitches for credit cards, some from fnbo, some not. More interesting was the offer at the top highlighted in green to sell me the fnbo.com website. I thought here we go again. Amtrak programmers strike again.
But several days later the link took me to a page that answered just about every possible question about the change in a straight forward way.