The front suspension is a pull-rod type like the one used by Ferrari, which is a change from last year, and the sidepods and rear bodywork are probably the most notable of the other upgrades. McLaren hopes the "deep and sweeping re-design" will avoid the mid-season slump of last year; the team had the fastest car to start and end the 2012 season, but it played catch-up during the meaty part of the year. As we can expect with probably every major team on the grid, upgrades are already planned, McLaren saying there's a big package being prepared for the second test.
Returning driver Jenson Button now leads the team after Lewis Hamilton's departure to Mercedes, and is paired with ex-Sauber driver Sergio Perez. Two videos below will get you a closer look at their steeds: The first video is the television presentation – the action starts at 31:52, the second gets some close-up shots of the silver bullet.