Bloody love it. And 2016 earlybirds go on sale on Monday:

"Between the 9th and 11th of June of 2016 Parque da Cidade will once again host NOS Primavera Sound. The first full festival tickets for the fifth edition of the festival will be available from Monday, June 29th, at 12pm (GMT), at the reduced price of 75€. The sale ends at midnight Tuesday, June 30th, and the points of sale are Ticketscript, Atrápalo, Seetickets, bol.pt and NOS Primavera Sound Portal.

At the same time, bearers of the NOS Primavera Sound 2015 full festival card can acquire the full festival ticket for the next edition of the festival at the reduced price of 70€. The passes can be bought at bol.pt through validation of the card’s barcode.

Also from Monday, June 29th, the first VIP tickets for the festival’s fifth edition will be on sale. The campaign ends at midnight Tuesday, June 30th, and tickets will be available at the NOS Primavera Sound Portal at the reduced price of 135€. VIP tickets are sent until October 15th for the address registered at the time of purchase. VIP tickets include a welcome pack given at the festival’s entrance and ensure access to the NOS guest area with privileged view of the main stage and an exclusive service of food and beverages at reduced prices."