At some unspecified point in time, Windows Phone will displace Symbian inside Nokia but we have 200 million existing Symbian users and target sales of approximately 150 million more. We do no know exactly when the last Symbian device will ship or be sold but we will continue to modernize the Symbian experience with a selective programme of enhancements and we will launch more devices on the Symbian platform.Q: What will happen to S^3 UI update? Will Nokia still be providing updates for S^3 devices:
A: We will continue to leverage the value of Symbian as we build our Windows Phone business. We will continue to modernize the Symbian experience with a selective programme of enhancements and we will launch more devices on the Symbian platform.
Q: What will happen to MeeGo?
A: We will transition the MeeGo open source project to focus on exploration of future platform disruptions and next generation devices, platforms and user experiences. We expect to deliver a MeeGo-related device later this year but that device is best defined as an 'opportunity to learn'.
In other words, symbian will be killed, but in a distant future(I believe they still want to get the ROI for symbian). while MeeGo will continue as a experimental and innovation rich platform.