11g Features

1    MEMORY_TARGET   
2    Make Table Read Only   
3    DDL TIME OUT   
4    resizing temporary tablespace   
5    Extended sub partitioning   
        Range-range
        Hash-range
        Hash-hash
        Hash-list
        List-range
6    interval partitioning   
7    snap shot standby   
8    result cache   
9    controls trigger executecution when more than two triggers exists on table   
10    Case sentive password   
11    plsql native compilation   
12    adrci   
13    PL/SQL CONTINUE Statement   
14    SIMPLE_INTEGER Datatype   
15    New SYSASM Privilege for ASM Administration

11gR2

1   Grid Infra Structure
2   Differred Segment Creation
3   DUPLICATE Without Connection To Target Database
4   Grid Plug and Play (GPnP)
5  Oracle Restart
6  Oracle Universal Installer Support for Removing Oracle RAC Installations 
7 ASM Cluster Filesystem (ACFS) 
 8 Oracle 11g release 2: Cluster Voting Disk and Cluster Registry in ASM 
9  Duplicate a database without connecting to a target database and a recovery catalog 
10 RMAN Tablespace Point-in-Time Recovery (TSPITR) 11gR2 Enhancements