Force India are aiming to score "a few" podium finishes in 2015, according to boss Vijay Mallya.
The midfield team narrowly lost out to McLaren in a fight for fifth in the constructors' championship last season and took only one podium.
Force India retain Mexican Sergio Perez and German Nico Hulkenberg as drivers.
Mallya said: "We have two exceptional drivers who will hopefully steer the challenger to the front of the grid and a few podiums during the year."
Force India launched a new predominantly silver and black livery at a presentation in Mexico City on Wednesday.
The team's 2015 car will not run until the second pre-season test, in Barcelona from 19-22 February, but they will use a modified 2014 car for the first in Jerez on 1-4 February.
The team are hoping to benefit from a new deal to use the highly-rated former Toyota F1 wind tunnel - a key aerodynamic design tool in the sport.