Bill for Portugal festival grows
Four members and manager died in Swedish car crash during February
The Maccabees, New Order and The National to headline this year's event
Brian McFadden and Keith Duffy team up, with other members possibly joining in future
Exclusive pre-sale offer allows fans to buy tickets before general release
"I'm in the same boat as everyone else" says Lee in interview
Festival takes place in Exeter this year and will be headlined by Coldplay
Chvrches, The Vaccines, A$AP Rocky, Travi$ Scott, Haim and Jack Garratt also join line-up
ATP assures an error of 'miscommunication' and that festival will run as planned