The usual sign-up bonus offers for the Citi / AAdvantage Platinum Select World Elite MasterCard and the CitiBusiness/AAdvantage Platinum Select World MasterCard is 30,000 AAdvantage miles after you spend $1,000 on purchases in the first 3 months of account opening. However, there is currently a limited time offer where Citi is offering sign-up bonuses of 60,000 American AAdvantage miles with a $3,000 spend with the regular card and 70,000 miles with $4,000 in spend with the business card. This is the offer for these cards that we saw this past spring.
With the regular card, you earn 2x miles on all American Airlines purchases and 1x miles on all other purchases. With the business card, you earn 2x miles on or every $1 you spend on purchases at certain telecommunications, and car rental merchants and gas stations. You earn 1X miles on all other purchases.
As much as I would like 60,000 American AAdvantage Miles, I think I am within the 24 month period of having these cards once before and canceling them. So even if I got approved, I would not got the bonus points, which to me is one of the main reasons to get the card. I hope these 60K offers reappear again next year!