Yes they dropped the 665 P/N film because of some OSHA problem with the chemicals used, or something like that. The type 55 film though is still produced. But you need a large format with Polaroid back to use it. Write an e-mail to Polaroid. If there was demand for the 665 I'm sure they could figure out how to produce a modified version, since the 55 is still in production.
What film does the I-zone take that you couldn't find?