Which one is more appropriate?
- I'll contact him and I'll keep you updated with the arrangements status.
- I'll contact him and I'll keep you updated regarding the arrangements status.
Which one should I use? "Regarding" or "with"?
You want a proper preposition?
I'll contact him and keep you updated on the status of the arrangements.
We generally use the verb
update in this format:
update <someone> on <something>