The Maple is a new variant of tree added by Natura. It has dark speckled barks that leads to a light wood interior. Its leaves is very similar, yet in between two colors like Brown/Orange Autumn Trees. The saplings are bright orange, almost as neon as the silverbell saplings. Maple are found in Forest biome. However, it will appear somewhat darker green on the mini-map / world map instead of as light brown. Could be a bug.
Its planks can be used to create a maple Crafting Table ,however, the 1.12 crafting guide is not implemented.
It doesn't seem like you can craft the maple fence, though it is available through creative-probably a bug.
Like most other trees, if you want the maple tree to grow, it should be planted above y:65.