No real surprises. Religions in general are shrinking, young people are more and more non-religious, and Christianity is taking the brunt of it being the largest faith family in the US.
The trend in the US has been against Christianity, though this trend has not been as extreme as in Europe. It is important to remember that recent trends are not necessarily indicative of the future. All Christians must remember the Great Commission:
“Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit, and teaching them to obey everything I have commanded you."