The My Oracle Support (MOS) portal has a quarterly release and MOS 16.4 was just released on October 21, 2016. See the following documents for detailed information:
My Oracle Support Resource Center (Doc ID 873313.1)
- What's New: Release Notes, Supported Browsers and Languages, Frequently Asked Questions (FAQs) and Quick Reference Guides
- Do you know about: Learn about Support Tools and Resources, Get Proactive, How to Work Effectively with Support and Oracle Best Practices
- Test your Knowledge: Test your knowledge and get Accredited
My Oracle Support Release Notes (Doc ID 780132.5)
- Release Notes: New features, bug fixes, and known issues for My Oracle Support release 16.4
- MOS FAQs: General information about My Oracle Support not contained in the release notes