I've heard nothing in regards to this but I wouldn't be surprised if you and others who seem to want a full Office suite on a phone will be disappointed yet again.
I find nothing wrong with Note myself but I understand the WP Office is fairly limited in use. I don't see this changing much but then, maybe they might modify it slightly for larger screen phones.
On the whole, the keynote talked about a more touch friendly interface for tablets and touch PCs. The phone version wasn't really mentioned and I would highly doubt it that it will ever be an Office suite will full capabilities. The phone version is about simple reviews, modifications or a start. It's not about being a full suite.