Just been searching for rules for this and some interesting rumours popped up from games day-
gr1m_dan-
Just got back from Games Day in the UK (Apart from a couple of areas, it was rubbish, never going again) and spoke to the chap who has done the XV107 rules and got a few little tidbits from him.
It has:
Higher toughness value - he said one point higher so T7.
More wounds - Didn't say how many but I think 6.
Nova Reactor has different effects to the normal one BUT can still hurt itself.
Weapons - Submunition Cannons (Plasma I think he said) - the bigger the target it hits, the higher strength of the weapon. Two 5" blasts also I think, he said 5" blast but I forgot to ask if two or one but model would suggest two. He said it is great against all infantry but if it hits a tank then it REALLY excels due to "size" of target hit. Wasn't really clear but could be a winner.
Few weeks yet as they need to be play tested accordingly he said. Shouldn't be too long though as he was willing to give quite a bit away!
Not sure how the weapon will work :-S He just said "bigger targets take higher strength hits" so maybe it works on Infantry/MC/Vehicle etc etc??? He mentioned it would make a mess of light armour (like we needed help with that but hey). 60" Range for definite though.
100% no jump pack.
Didn't mention anything about it being Stealthy either. Just higher toughness and more wounds.
It will be interesting to see what the Nova Reactor does though!
EDIT :-
Sorry I couldn't get everything I was just listening to what he said. Should have asked a lot more