http://discodigital.sapo.pt/
http://blitz.aeiou.pt/gen.pl?p=stori....stories/19207

They're both portuguese sites but you'll get the idea.

Disco Digital's main line goes ' Bon Jovi são cabeças-de-cartaz do Rock In Rio ' which means ' Bon Jovi headline Rock in Rio '.

Blitz goes 'BON JOVI EM PORTUGAL - Banda confirmada no Rock In Rio - Lisboa.' which means ' Bon Jovi in Portugal - band confirmed in Rock in Rio '

So there ya go. Both these websites are highly respected in Portugal. Also, according to www.rockinrio.com they're confirmed as the headline for the 31st of May. Hope this helps anyone !

Cheers