Technically i guess it can be considered Klitschko vs Peter 3 all fights considered.... not sure as to your question though. All i can say is i hope its available because this will be absurd if i miss this fight because of something like this.
It's strictly online if you want to see it live. See this thread for more info: http://www.eastsideboxing.com/forum/showthread.php?t=250985
It's true. If you are in the US, and want to see it live. ESPN3.com is the only option. ESPN3.com is going to be available to all xBox360 gold members....but that's not until November. Until then, if you want to watch it on your TV, you'll have to run an HDMI or other cable from your computer to your TV.
If you're watching a live stream, it is from a television broadcast so there exist no strictly online fights.