1) lowcostportugal.net reports that both Vueling.com and Transavia.com will be launching new flights to Porto as follows:
31 March 2014 - Porto to Barcelona
1 May 2014 - Porto to Brussels
28 April 2014 . Porto to Lyon
Article here (in Portuguese):
2) Portuguese online travel news site http://opcaoturismo.pt reports that low-cost Canadian operator, Rouge, is planning to start services to Lisbon, Portugal in summer 2014.
Article here (in Portuguese): http://opcaoturismo.pt/wp/?p=2236