Yup that's right and it sold out in minutes.
Mailing list subscribers were given ultimate priority over ticket sales.
"<i>As previously announced by Steve Lamacq on Radio 1, Arctic Monkeys shall be performing live at The Forum, London on Thursday 24 th August. Support comes from Klaxons. Tickets go on sale now.</i>" arcticmonkeys.com
The reason for this secret show and the mailing list priority was to give the genuine fans priority over possible touts. Fans may only collect their tickets/wristbands on the door which also prevents touting.
For those of you who got tickets, well done, for those of you who didn't, better luck next time and you'll possibly have to wait a few months for a chance.
Stay tuned.