Seems like it doesnt send a notification out.
Certainly looks that way.
Unfortunately I only got a notification for your initial post, of which you had then edited before I had responded.
So would not (if it worked) have received a edited notification.
But with TD's help I'm pretty sure notifications are not sent for edited post's.
Obviously this can be a point in it's favour, especially if a post is edited only amended for cosmetic purposes such as a typo or possibly something thats not too important.
I know in the past I may have edited one of the tutorial 3/4 times and always felt slightly guilty that people may have been receiving notifications and not being able to see any additional posts and therefore wander what's going on.
So, realistically, for something of consequence, a new post should be used.
Whereas a typo correction etc, then use the edit feature.