I just heard from a friend who's mate at ILM watched 5 minutes of the EP. 7 recently and said that it was mind blowing and took them right back to being a kid and watching Star Wars for the first time.
There are no details as nobody in their right mind working at ILM should be leaking anything but it's encouraging news. One thing I do need to add though is the person from ILM did take a long while to finally admit that EP 1 was rubbish. It's so subjective and who knows if this was the best 5 minutes........or maybe the worse?