Thanks to PTEHZA for pointing this out.
A while ago, the Old Blue Cash was the only card in the Blue Cash “family”. When Amex revealed the Blue Cash Everyday and Blue Cash Preferred cards, the OBC’s public page was taken down. And yet, it continued to live on in the form of a direct link to the application page.
Sometime recently, though, a public page for the card has appeared on Amex’s website, under all personal cards. All of the rewards terms seem to be the same (with the $50 000 yearly cap), so it’s definitely the same card.
Here’s my speculation (keeping in mind it’s just speculation). I think this means Amex wants to support this card, considering it’s now public again. That may even mean a signup offer in the future (or at the very least a lowered interest rate offer like it used to have). Here’s to hoping they don’t destroy the rewards structure as well as introducing a signup bonus.