Opera has released Coast, a browser designed specifically for the iPad. According to Opera all other browsers for the iPad are merely copies of their desktop versions. Coast has no back button - in stead you can swipe back to the previous page. There also is no address bar - which takes some getting used to...
News report here: [techland.time.com
User agent string:
Mozilla/5.0 (iPad; CPU OS 6_1_3 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Coast/18.104.22.168956 Mobile/10B329 Safari/7534.48.3