I picked up the just released GoPro Wifi Bacpac for my HERO2 camera yesterday. It is advertised as having several capabilities: a) comes with a remote to remotely control the camera (actually up to 50 cameras!) from up to 600ft away b) use your smartphone as a viewfinder & remote control c) Live stream video from wherever you have a wifi connection. The manual shows the facebook and youtube icons... The wifi bacpac is the same size as the LCD or battery bacpac, as expected. It comes with a new rear "door" (both waterproof and non-waterproof versions) to accomodate for the larger size. It has its own power button so the new rear door has an additional "push through" button on it. It has its own battery contained within and the manual says that if the wifi bacpac's battery is fully depleted, it will use the camera's battery as a backup. I have not tested the battery life, I *hope* it at least equals the camera battery. It looks like the bacpac has both wifi and bluetooth radios in it - I will have to use a frequency counter to see if the remote control it comes with is actually using wifi or BT (for my own curiosity). I like the design of the remote control - it comes with a wrist strap as well as a clip that you can easily attach to a zipper pull or keychain. The clip is removed (by moving a slider on the bottom) and a special USB adapter is plugged in to charge and to update the firmware. I have not yet tested the battery life of the remote control. The remote works well - it has a display on it that mirrors the display on the camera itself. Unfortunately, capabilities b) and c) above have not yet been implemented. When you try to enable wifi from the new wifi menu setting on the gopro, it says "coming soon." The GoPro app for the iphone does not yet exist. Some tech blog writeups have said that an existing wifi network will be required to use the smartphone gopro app as a viewfinder & camera control. Combing through the manual, I believe this is NOT true. I believe that the wifi bacpac will form its own ad-hoc wifi network which you can connect to with your phone. I look forward to reviewing the full capabilities of this device once all the features are implemented. Using wifi as a transport protocol means I can sniff the traffic and maybe do some creative things.