The event is scheduled from 2-5 March and it is good time to showcase Windows 10 for phone along with announcement of couple of new Lumias, we will reckon. Nokia has in past always used MWC as a platform to launch some new smartphones, so we understand, it will continue with Microsoft Mobile.
Coming to which Lumias may be announced, we have two (three) very worthy candidates that we have provided lots of exposure and some exclusive coverage too.
RM-1099 with 4-inch display and Dual-Sim support
Microsoft Mobile may reveal more about hardware support and software capabilities of Windows 10 for Phones at MWC 2015 too.