12.1.0.2 has landed. You can download from http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html or edelivery.oracle.com
The new features documentation can be found at Oracle Database 12c Release 1 (12.1.0.2) New Features
New features (other than the widely advertised in-memory option) include:
“Advanced Index Compression”
“Approximate Count Distinct”
“Attribute Clustering”
“Automatic Big Table Caching”
“FDA Support for CDBs”
“Full Database Caching”
“In-Memory Aggregation”
“In-Memory Column Store”
“JSON Support”
“New FIPS 140 Parameter for Encryption”
“PDB CONTAINERS Clause”
“PDB File Placement in OMF”
“PDB Logging Clause”
“PDB Metadata Clone”
“PDB Remote Clone”
“PDB Snapshot Cloning Additional Platform Support”
“PDB STANDBYS Clause”
“PDB State Management Across CDB Restart”
“PDB Subset Cloning”
“Rapid Home Provisioning”
“Zone Maps”
Time to download and have a play.