Nokia closed a Windows Phone alliance with Microsoft but this doesn't mean that the company will completely abandon Symbian and MeeGo, although further information revealed in a Q&A session hints that Symbian may be on its last legs.
Here's what Nokia has in store for MeeGo:
"Under the new strategy, MeeGo becomes an open-source, mobile operating system project. MeeGo will place increased emphasis on longer-term market exploration of next-generation devices, platforms and user experiences. Nokia still plans to ship a MeeGo-related product later this year."
Likewise, Symbian isn't going away either:
"With Nokia's planned move to Windows Phone as its primary smartphone platform, Symbian becomes a franchise platform, leveraging previous investments to harvest additional value. This strategy recognizes the opportunity to retain and transition the installed base of 200 million Symbian owners. Nokia expects to sell approximately 150 million more Symbian devices in the years to come"