The Enstone based team, fourth overall in the last two years, has languished this year but reportedly plans to revive its fortunes with Mercedes.
What about the others in pitlane?
Despite all the noise, Red Bull and Toro Rosso are expected to stay with Renault, completing a fully Red Bull-linked circle of teams for the French marque with Caterham to continue using a Renault power unit and Red Bull gearbox.
Swiss team Sauber has notably struggled in 2014, but it will not change its engine supplier for 2015.
When asked if it is even a possibility, team boss Monisha Kaltenborn told Speed Week firmly: "No."
On the driver front, however, it could be different.
"We have several options when it comes to drivers," Kaltenborn admitted. "When the time is right, we will make an appropriate decision."
Book discounted tickets and reservate your hotel room in our F1 Tickets Shop.