I was able to pull up the 100,000 Plat offer in the credit card offers on Amex's website. There is no lifetime language in bold at the top nor do the terms mention previous customers.
I currently hold a Plat that I opened in 2013 using a 100,000 lifetime mailer. Is it possible I can get ANOTHER 100,000 bonus? My AF posted on my Plat this month so I am deciding whether to downgrade or keep it. If I could get 100,000 again, I will just open abother Plat and close my current one.