I doubt it. I don't think Paris Hilton and Nicole Richie are very good friends anymore. Plus, Nicole has a family now, I don't think she'd want to get her two kids involved with a TV show.
Since teaming up for the FOX show, Simple Life, Nicole & Paris have both gone their own separate ways. No plans are currently available for another reality show starring these two ladies.
I do not believe a new show with these two is in the works. I do not believe that they are on speaking terms anymore. The simple life is probably the last you will see of these two together.
They are not planning on doing another television show together. They are not really very close friends anymore. Paris wasn't even invited to Nicole's wedding.