What is the Future of Database Systems?

Last month saw a flurry of activity around the future of relational databases. Although no one can predict the future, I think it is safe to say that many system developers/architects are hungry for mainstream semi-structure databases.

Feb 12 Is the Relational Database Doomed?
Feb 13 Is The Relational Database Doomed?
Feb 13 CouchDB could be a viable alternative to relational databases for storing patient data
Feb 16 The future of RDBMS's
Feb 20 Is the Relational Database Not an Option in Cloud Computing?
Feb 27 How FriendFeed uses MySQL to store schema-less data