The ability to use a MHL adapter to connect your device to the HDMI input port on your TV needs to be upgraded. Apparently the pin configuration on the new SGSIII is not the same as its predecessors. So that fancy MHL adapter that you may have purchased for your Galaxy S II or even your Note, won’t work with your new S III. Again, not a huge deal breaker for many since the need for this isn’t in as high of demand and the device its self.
The new Samsung branded MHL adapter will set you back between $30 and $40 bucks. Putting another little divot in your wallet if have the need to connect your device to the TV. To make things a little more annoying, there are reports of it not working so well with 720p displays. You might need to upgrade that TV of yours too. If you are going to do that though, you may as well spring for a TV with DNLA support so you can just stream from your phone and then you won’t even need this little adapter at all.