It's hard to tell from photos, as many causes of wilt cause similar-looking symptoms, but possibilities include cambium damage during winter or last autumn and Verticillium Wilt. Cambium is the vital living tissue just below the bark that conducts water, nutrients, and carbohydrates between roots and the canopy. Maples have comparatively thin bark, especially when young. If the cambium is damaged by cold snaps or physical injuries (cuts from mowers, tools, tree stakes, etc.), it can't always repair itself, which deprives branches of their water supply, that can cause the death of those leaves and any dormant buds. Verticillium Wilt is incurable, but you can prune out the wilted branches or branch tips and see how the tree fares. The wilting and withering looks widespread enough, though, that we suspect the tree will need to be replaced.

If Verticillium Wilt is the cause, planting another maple in that location would not be wise, as it may also succumb to infection. If it isn't, and the issue is more weather-related and due to stress from the ongoing drought (unless it was being regularly monitored for watering needs), then replanting a new maple there should be fine.

How long ago was the tree installed? Some stress symptoms and disease symptoms take longer to manifest than others. The tree also appears to be planted too deeply, as we don't see a root flare exposed at the soil surface. When trees are planted too deeply, they become more vulnerable to life-threatening problems like girdling roots and root oxygen depravation. If you replant, or even if you keep this tree, try to have the root flare located just at the soil surface and not below any soil or mulch.

Miri