I hope it's not true but it seems you can only enable gestures on the iPad 1 if you jailbreak it
http://www.cultofmac.com/heres-how-...-ipad-under-ios-5-beta-jailbreak-tweak/100183
http://www.cultofmac.com/heres-how-...-ipad-under-ios-5-beta-jailbreak-tweak/100183