stoyafan1 I don't have an option yet either, but it sounds like it will be pretty clear on the profile page
With that said, it does look like the upgrade will lose any discounts you may have and convert to a $39.99 subscription regardless of what your original discount was. If it's not available, you might be better off just cancelling and resubscribing at that price since you'll lose your discount either way.
I've been waiting for this upgrade to become available for my account also, but the higher cost had me reconsider.
Edit: apparently if your account is from before may 2021, you need to cancel and resubscribe anyways
