you shouldn't have to restore. just tell iTunes on your new laptop to sync with the phone, and your contacts should be duplicated on the computer, and any camera roll pics or IMs should remain untouched. i THINK that any music or videos will be gone, though. you'll need to import your old library to your new one to get that sruff goin.
well, you can always re-sync with your old computer to get your contacts back. and to backup your pics, just save them to a folder on your old computer like you would with a digital camera. the only problem is you can not (to my knowledge) backup IMs, so if that is important to you, i'd wait for confirmation.