It's quite noticeable that the vibes from EI about the 330NEO seem to be a lot more muted than they were originally; "we have been invited to take another look" suggests that they took a look originally and said "meh .... no".
I wonder what Airbus is now offering that might make the 330NEO more attractive to them. I think the fundamental issue for EI is that by 2020, according to their fleet plan issued in September, they intend to have all 9 A350s in service. Their current A330 fleet is not that old at all and will easily be able to continue to 2020. Given that timeframe and the fact that the 330NEO won't be in service for a few years anyway, it doesn't leave much space in the fleet plan for a new sub-type which doesn't really give them anything more (i.e. range, capacity) than they already have.
That said, I would think that EI is VERY interested in the proposed extended range A321NEO. It intends to have five "757 size" aircraft by 2020.