It seems there is the slight chance Porto may not be permitted to participate in next season's Champions League despite being Portuguese champions and in theory having secured a direct inclusion in the tourney.
This based on the issue of Porto's alleged involvment in corruption and influence peddling within the Portuguese league, dating back to the 2003-2004 season specifically. Uefa is apparently considering disqualifying Porto from competition and will pronounce themselves on the issue June 6th I believe.
Porto did not contest the penatly of 6pts they have been sanctioned with and as the time-limit has passed, no longer have grounds for an apeal. Should the punishment go through, Uefa may rule against Porto based on this action by the Portuguese Disciplinary Committee.
The possible ruling by Uefa seems to be based on the fact that Milan was permitted to participate in European compition despite being penalised in Italy as there was no such law prohibiting penalised clubs at the time; the law has since then been made to avoid this very situation and Porto could find themselves shut out as a result.
Let's wait and see what will happen, but if Porto are punished for influence peddling I think disqualification from Europe is a just punishment...it's a start at least. Portugal's point haul will be smaller as a result so who knows if the Portuguese League itself won't be against the idea.
http://www.abola.pt/nnh/index.asp?op=ver&news=140930&tema=5