ZDNet : 2011 is the year of the enterprise iPad.
To repeat what I've been saying for a while, Microsoft are utterly fucked if they don't get Excel on the iPad now! They will lose their best and most valuable business brand. And more importantly they'll lose their de facto ownership of the majority of the world's "semi-structured" data.
And once this is lost, the rest of the Office house of cards will come tumbling down too - I "need" Excel because all my business data is in XLS files; but once my business data isn't in XLS files (once its in iPad todo-lists and executive dashboards) then I won't need Excel; and if I don't need Excel, what else in Office do I really care about?