I don't think I've seen anything on Rob's health status here.  He is very near the end of his life. His most recent health update was posted April 24th on http://www.robburbea.com/

This was posted a few hours ago to reddit:

https://www.reddit.com/r/streamentry/comments/ga5odq/rob_burbea_metta/?utm_source=share&utm_medium=web2x

I loved his arising, I am filled with sadness by his passing away.

Wishing him well on his journey.  Deep gratitude for his life and teachings.

Such an inspiration... I've never even met him in person, but am Extremely grateful for his work, ever touching. I'm sure he will go peacefully. Thank you, you beautiful man. The flame will live on.

I am so grateful for his book. Such a kind way of teaching.
Sending him Metta.

I'm 3/4 into his book Seeing That Frees. I feel moved by what I'm reading here. Very insightful teacher. 

May he pass in peace. Much gratitude for his work.