I actually like this twist if it turns out to be correct. The reason being is that it is a bit more difficult to make that "slam dunk" move for who to take with you at the end if there are 2 people to sit next to.
Am interested in how the logistics of this will be worked out though. Will the final 4 participate in the 3-part HOH? If so, does the winner evict 2 people? Maybe a point system for places in each round and the top 3 go to the finale? I am thinking there has to be some aspect to the winner getting some kind of choice just like in Survivor, so maybe the winner of round 1 and 2 picks one person to take to the finals and the other 2 compete for the final spot or something?
Knowing production, they won't explain ANY of this stuff to us, just tell us there are 3 in the finals and that is it. In any event, I really do like that they are shaking it up a bit because this will throw several people for a loop on their plans.