That’s it! The long awaited Oracle Data Integrator 12c is out!  You can find the 12.1.2 version on the ODI Downloads page
New Features in Oracle Data Integrator 12c (12.1.2)
Declarative Flow-Based User Interface
The new declarative flow-based user interface combines the simplicity
 and ease-of-use of the declarative approach with the flexibility and 
extensibility of configurable flows. Mappings (the successor of the 
Interface concept in Oracle Data Integrator 11g) connect sources to targets through a flow of components such as Join, Filter, Aggregate, Set, Split, and so on.
Reusable Mappings
Reusable Mappings can be used to encapsulate flow sections that can 
then be reused in multiple mappings. A reusable mapping can have input 
and output signatures to connect to an enclosing flow; it can also 
contain sources and targets that are encapsulated inside the reusable 
mapping.
Multiple Target Support
A mapping can now load multiple targets as part of a single flow. The
 order of target loading can be specified, and the Split component can 
be optionally used to route rows into different targets, based on one or
 several conditions.
Step-by-Step Debugger
Mappings, Packages, Procedures, and Scenarios can now be debugged in a
 step-by-step debugger. Users can manually traverse task execution 
within these objects and set breakpoints to interrupt execution at 
pre-defined locations. Values of variables can be introspected and 
changed during a debugging session, and data of underlying sources and 
targets can be queried, including the content of uncommitted 
transactions.
Runtime Performance Enhancements
The runtime execution has been improved to enhance performance. 
Various changes have been made to reduce overhead of session execution, 
including the introduction of blueprints, which are cached execution 
plans for sessions. Performance is improved by loading sources in 
parallel into the staging area. Parallelism of loads can be customized 
in the physical view of a map. Users also have the option to use unique 
names for temporary database objects, allowing parallel execution of the
 same mapping.
Oracle GoldenGate Integration Improvements
The integration of Oracle GoldenGate as a source for the Change Data 
Capture (CDC) framework has been improved in the following areas:- 
Oracle GoldenGate source and target systems are now configured as 
data servers in Topology. Extract and replicate processes are 
represented by physical and logical schemas. This representation in 
Topology allows separate configuration of multiple contexts, following 
the general context philosophy.
 - 
Most Oracle GoldenGate parameters can now be added to extract and 
replicate processes in the physical schema configuration. The UI 
provides support for selecting parameters from lists. This minimizes the
 need for the modification of Oracle GoldenGate parameter files after 
generation.
 - 
A single mapping can now be used for journalized CDC load and bulk 
load of a target. This is enabled by the Oracle GoldenGate JKM using the
 source model as opposed to the Oracle GoldenGate replication target, as
 well as configuration of journalizing in mapping as part of a 
deployment specification. Multiple deployment specifications can be used
 in a single mapping for journalized load and bulk load.
 - 
Oracle GoldenGate parameter files can now be automatically deployed 
and started to source and target Oracle GoldenGate instances through the
 JAgent technology.
 
Standalone Agent Management with WebLogic Management Framework
Oracle Data Integrator standalone agents are now managed through the 
WebLogic Management Framework. This has the following advantages:- 
UI-driven configuration through Configuration Wizard
 - 
Multiple configurations can be maintained in separate domains
 - 
Node Manager can be used to control and automatically restart agents
 
Integration with OPSS Enterprise Roles
Oracle Data Integrator can now use the authorization model in Oracle 
Platform Security Services (OPSS) to control access to resources. 
Enterprise roles can be mapped into Oracle Data Integrator roles to 
authorize enterprise users across different tools.
XML Improvements
The following XML Schema constructs are now supported:- 
list and union - List or union-based elements are mapped into VARCHAR columns.
 - 
substitutionGroup - Elements based on substitution groups create a table each for all types of the substitution group.
 - 
Mixed content - Elements with mixed content map into a VARCHAR column that contains text and markup content of the element.
 - 
Annotation - Content of XML schema annotations are stored in the table metadata.
 
Oracle Warehouse Builder Integration
Oracle Warehouse Builder (OWB) jobs can now be executed in Oracle Data Integrator through the OdiStartOwbJob
 tool. The OWB repository is configured as a data server in Topology. 
All the details of the OWB job execution are displayed as a session in 
the Operator tree.
Unique Repository IDs
Master and Work Repositories now use unique IDs following the GUID 
convention. This avoids collisions during import of artifacts and allows
 for easier management and consolidation of multiple repositories in an 
organization.