I guess I forgot to remove that line when i was testing in the past.
This is the line i removed. “deb http://apt.osmc.tv stretch-devel main”
No wonder I’ve been getting so many update prompts.
There is already a warning to remove the source after use in each post that advised on using it in a testing scenario! Failure of users to follow clearly advised instructions is no reason to make significant changes to infrastructure and development protocol.