British team announces on Twitter the date of the MP4-31 launch. It will take place on February 21st before pre-season testing in Barcelona.
Car launch will be broadcasted live on the internet so fans can watch it live.
Fernando Alonso and Jenson Button said themselves optimistic about the progress the team based at Woking and Honda can do together.
Barcelona testing will take place from February 22nd to 25th.
Feeling blue? Seeing red?? You can ALL see the MP4-31 launch on Feb 21! #McLarenMP431
— McLaren (@McLarenF1) 18 Janvier 2016