It feels like this needs to be explained every other thread in here.
Nokia will have it's own event 100m away from where MWC is held in 15-16th this month.
http://events.nokia.com/mwc/home.htm

That said i'm not expecting any super high ends from them there. First milestone Symbian phone should be out 1H this year if Nokia's executives word is to be trusted, but don't think it will be shown in Barcelona. Nokia has anyways been talking about getting away from MWC and the main event for this year and year to come will most probally be Nokia World. Where i wouldn't be surprised to see the second Symbian milestone device shown and some Maemo 6 loving.

Maybe the most interesting keynote considering Nokia in MWC will be the Intel one.