You’ll just have to go to see (I suspect Apple has pulled them and will use remaining inventory for warranty replacement), or go to your carrier’s store ASAP and see what they have. If I beat you to it, I’ll let you know if there are any SE phones available in my store.
My wife is trying to decide between the SE and the 7 (or 8). She wants to try them in store first. We should be doing this soon. (I’m trying to talk her into 4.6”. She’s already got text size dialed way up and it’s showing so little info at a time on the 4” display. But her concern is purse size and will the phone fit in the smallest one she uses.)