Hello,
There are no SEPM 12.1 RU2 training PPT as of now.
However, I am in making of Video on the Topic "What is new in SEP 12.1 RU2. "
As of now, the best suggestion I could provide you is you could refer these Article and create your Presentation which may help you understand the topics and assist you when you are trying to explain.
What's new in Symantec Endpoint Protection 12.1.2
http://www.symantec.com/docs/HOWTO81091
What's new in SEP 12.1 RU2
https://www-secure.symantec.com/connect/articles/whats-new-sep-121-ru2
Hope that helps!!