Justin Kestelyn, OTN Editor-in-Chief, has just announced that Oracle Database 11g Release 1 for Linux is available for download right now. Get it while it’s hot. However, the documentation is still not out yet.
Update: Here is the Oracle Database 11g Release 1 (11.1) Documentation.
Update2: And more specifically here is the documentation for Oracle 11g Database New Features. You can even submit your comments about the documentation.