After being teased earlier in the year, v4.0 of the Sky+ app for iPad has arrived in the UK and brought a number of new features to subscriber's tablets. Now, it can be used as a remote control to change channels or select DVR functions, as well as view scheduled recordings and add to or change them, or just browse the TV guide's new look. Even with the changes however, Sky has more planned for later this summer when it will integrate zeebox technology to