We all know it's coming, but Apple and their secrecy shuns us from the truth, constantly. We don't know if the next-generation iPhone will be called just 'iPhone', or 'iPhone 5', or something completely different.
But, Fusible has reported that Apple have filed a claim with the World Intellectual Property Organization (WIPO) where they seek to gain control of the iPhone5.com domain. WIPO authorities are currently assessing compliance of Apple's claim with the agency's regulations, and proceedings are likely to be initiated in the near future.
Right now, the iPhone5.com domain hosts a small discussion forum dedicated to the, well, discussion of the 'iPhone 5'. The forum was launched in October 2010, hot on the heels of the iPhone 4 release earlier on in the year. This should be interesting to most people, as Apple didn't even try to gain control of the iPhone4.com domain until over twelve months after the iPhone 4 itself launched.
Apple also didn't seek control of iPhone4S.com until weeks after the smartphone launched last October.