Penske have been promoting their 60th Anniversary pretty heavily so maybe they'll do a special livery for that.
"The 60th anniversary will be recognized throughout the year with a series of special programs, initiatives and storytelling designed to engage fans, partners and the motorsports community. The team will introduce a refreshed anniversary identity that will appear across its race cars, uniforms, digital platforms and merchandise."
But you've got to wonder what the current relationship between Roger and Porsche is right now after they kicked his Le Mans dream to the curb

Is it still a full factory funded effort or will there be a sponsor on the car? I'm guessing this is the last season in IMSA for Penske with Porsche because of that. Does Roger jump to a manufacturer who is qualified to enter Le Mans in 27?