Red Bull has revealed its 2015 contender - complete with striking "camouflage" livery - at Jerez.

According to the Austrian outfit, the RB11 features a host of improvements in all areas as the team seeks to improve on its 2014 campaign, when it took the RB10 from a difficult start to second place in the Constructors' Championship.

The most notable shape change to this year's car is the lower nose box and front of the chassis, which were amended in line with the latest regulations, but beyond that many of the RB11's updates are under its all–new black and white skin.

"The design of the RB11 has been very much about understanding what we learned from last season," admits Chief Technical Officer Adrian Newey, "which was a big regulation change as far as the power unit is concerned and the packaging that goes with that and setting about optimising the car from those lessons."

"There are some changes that affect the shape of the front of the car but beyond that most of the changes are under the skin," added Chief Engineering Officer Rob Marshall. "We've identified the areas where we can make improvements and we've worked hard on these. There won't be a lot that's visible to the naked eye but a lot of hard work has gone into the bits that are hidden."

A large part of that work has involved improvements to Renault power unit, updates that have been made in closer collaboration with the team.

"The relationship with Renault is a lot closer now," says Christian Horner. "Red Bull is the only partner for Renault now, through ourselves and Toro Rosso, and that focus from Renault together with a close involvement with our design team is yielding good results and a far closer integration between the power unit and the chassis side. Working in unison with Renault we can really make some big steps forward this year."

"We have been working very hard with our partners Renault to help them develop the engine," adds Newey. "What we have to remember is that the internal combustion engine and its very complicated associated items, the ERS and turbocharger, are long lead time items. Those are things where if one team takes an advantage then it takes time to overthrow that or get back on a par with or hopefully ahead."

"We've been pushing to the limit as usual," says Horner. "We had a very tight timescale for the car to be prepared in time for the first test, but that's normal in this team. If you're not on the limit you're not trying hard enough."

The team's 2015 challenge will be spearheaded by a new look driver line-up with Daniil Kvyat joining Daniel Ricciardo at the wheel of the RB11.

"It's an exciting and dynamic line-up," says Horner. "We know the quality of Daniel following his performances last year and in Daniil we have an outstanding talent. The speed, commitment and determination he demonstrated were all the qualities we're looking for.

"We've already seen what Daniel is capable of and we firmly believe that Dany has all the same attributes," he adds. "They're young, hungry, they're incredibly quick and I think they are going to push each other very hard throughout the year."

For Ricciardo and Kvyat the brief two-month wait for a return to the cockpit is over and a first taste of the RB11's potential awaits.

"I'm looking forward to driving the RB11 and I'm hanging out to get behind the wheel again. I hope it's going to be a beast. We'll soon find out," says Ricciardo.

"There was plenty of pressure on me last year to prove myself in a top team and I think everyone knows now what I'm capable of so I'm excited – excited to build on what we achieved in 2014 and ready to give Mercedes a good fight."

"It's going to be very exciting to drive an Red Bull for the first time for me," adds Kvyat. "It's a fantastic opportunity for me and I'm really looking forward to finally getting into the car. It's going to be cool.

"Though many people in the team know me quite well, there is still the challenge of entering a new team for myself. However, I haven't really set any targets for 2015. I just want to keep doing the best job possible with hard work and the right attitude and that's the best thing I can do."

On joining forces with Ricciardo for 2015, Kvyat added: "Me and Daniel have known each other for quite a long time, about five or six years from when I entered the Red Bull Junior Team. We have a good relationship and I hope to have a strong relationship based on healthy competition, which will push the team forward."