Personally I never thought this product would go much of anywhere... although I must admit I was keeping a weary eye on it. If MS makes up their mind to go after something it can do it. I think MS realized that the customers who might deploy this type of solution don't want to put more reliance in MS products... And the vendors who might choose to install this type of product might not understand it and do poor jobs implementing it.
I think it had some potential but Microsoft has a real muddied message here with Response Point and Office Communications Server. Personally, I'm not thinking that OCS is going to go anywhere either.