Introduction
============

This document highlights changes to the Core Libraries since |CONNEXT| 7.3.0 LTS. 

|RTI_TM_CONNEXT_TM| 7.4.0 is an early access release that is built upon release
7.3.0 LTS. See the 
`Connext Releases <https://www.rti.com/products/connext-releases>`_
page on the RTI website for more information on RTI's software release model.

For an overview of new features in 7.4.0, see :link_connext_dds_pro_whats_new:`RTI Connext What's New <index.html>`.


Additional Documentation
------------------------
Many readers will also want to look at additional documentation
available online. In particular, RTI recommends the following:

-  **Use the RTI Customer Portal**
   (`https://support.rti.com <https://support.rti.com/>`__) to download
   RTI software and contact RTI Support. The RTI Customer Portal
   requires a username and password. You will receive this in the email
   confirming your purchase. If you do not have this email, please
   contact **license@rti.com**. Resetting your login password can be
   done directly at the RTI Customer Portal.
-  **The RTI Community Forum**
   (`https://community.rti.com <https://community.rti.com/>`__) provides
   a wealth of knowledge to help you use |CONNEXTDDS_ITALIC|,
   including:

   -  Documentation, at https://community.rti.com/documentation
   -  Best Practices,
   -  Example code for specific features, as well as more complete
      use-case examples,
   -  Solutions to common questions,
   -  A glossary,
   -  Downloads of experimental software,
   -  And more.

-  Whitepapers and other articles are available from
   http://www.rti.com/resources.
-  Performance benchmark results for *Connext* are published online at
   http://www.rti.com/products/dds/benchmarks.html. Updated results for
   new releases are typically published within two months after general
   availability of that release.