The latest release notes are:

•  RTCU Firmware for X32 based device (MX2/SX1/CX1/DX4/AX9) V3.00 

•  RTCU IDE (Integrated Development Environment) V6.40

•  Navigation and Messaging Platform V2.00

•  RTCU Gateway 2 V2.02

•  RTCU Deployment Server V3.12   

•  RTCU Communication Support Package (CSP) V1.50  

•  RTCU Programming Tool V6.60 
   

•  RTCU Firmware for A5i/A9i/M11i Series (+older products)

All software releases, including the latest versions of the RTCU IDE and Firmware, can be downloaded free from the download section.
On the code examples page, you will find various application and RTCU IDE program samples.

Previous release notes can be found here