Thank you for contacting the Intel Communities.
The best way to go to check the status of your warranty would be with Intel Customer Support.
You can give them a call or open a chat session here: Contact Support
Just provide them with that RMA number and they will be providing you with the status (you could also request the tracking number to have a better overview of the status).
If any additional questions or inquiries come to mind, feel free to contact us back.