Centurion, VISA is entering the exclusive high net worth credit card business with their Black Card.
The perks?

• The card is constructed of CARBON GRAPHITE (compared to titanium alloy for the AMEX Centurion)
• 24 hour concierge
• Luxury gifts?
• Annual fee is $495, compared to $2500 for AMEX
• Only the top 1% of Americans will qualify for a card (fairly exclusive)

Via: http://www.bankaholic.com/858/visa-launches-black-card