the optima is what amex calls a "recovery account". it's what they give you when they want to keep you "in the family". the usually offer it to you right away.
it's an unsecured credit (not charge) card. if they're offering it to you, it's the only amex you'll qualify for. taking it is your quickest way back to a regular amex. depending on your situation, it should be around 9 months to a year before you can apply for a real amex card. you will need to cancel the optima before you can apply for another amex card.
don't know if you'll get a hard pull, i would guess not since amex already knows your finances - they soft pull the heck out of you as a member and they have your tax info too (if you complied with that)...