Most likely one of the party delegates will propose a rule change during the rules committee meeting a week before the convention... there was talk about proposing a rule change allowing 8 candidates with at least one delegate to his count.
Link But even without the rule change it will follow pretty much as stated at this site a few day's ago.
Link Now personally I don't think that Trump or Cruz is wanted... but that will remain to be seen.
Hell, I would be real surprised if Cruz will be able to remain in the Senate, I think he's done in all politics.
Phil