Providence is a large mango, similar in size to a large Keitt. It can be picked mature green or with some color, tastes best when picked with some color however it may have some issues if left on the tree too long. Flavor, to me, is like a perfectly ripe Kent crossed with a perfectly ripe Keitt. Tree seems to be a compact grower (not saying it is a dwarf but a compact growth habit. It is not a vigorous grower and I dont feel it will make a large tree when fully mature).
I do know the story behind Providence but have been asked not to disclose at this time. That may change in the coming future.