Peggle coming to iPhone are true. According to Wired, PopCap Games announced Peggle's next mobile destination via its "official" Twitter feed. The company wouldn't comment further, and actually went so far as to remove the tweet; however, the internet doesn't forget, as evidenced by the image we captured above.
Peggle was actually one of our Top 10 games back in 2007. Hopefully, the company removed the tweet not because it was incorrect, but because it intends to keep the secret until iPhone Peggle receives FDA approval. The Peggle must flow.
Update: A PopCap representative confirmed to Joystiq that Peggle on iPhone is "launching in early March."