iPhone and iPod Touch with soon to come OS 4.0 will have more gestures according to SDK (Software Development Kit) screenshot below. New Gestures are Triple Tap and Long Press which currently are not on OS 3.0+ for iPhone or iPod Touch, so far it is unclear what those gestures can be used for exactly, but will update soon as iPhone app developers report back to community.
But don’t get confused, iPhone and iPod Touch already have Long Press feature which basically allows you to copy and paste things. Long Press in this ‘version’ is more meant for developers who can use it for building Applications non technically speaking.
I am assuming that iPhone 4G will have triple tap and long press gestures included in few Apps which release date is this summer.