iCloud+ will be available later this year, and the following article has a good description of what it includes: https://www.howtogeek.com/732978/what-is-apple-icloud/
Along the same vein, the following article discusses what's new in iOS.
Jim Hamm
https://www.howtogeek.com/732836/whats-new-in-ios-15-ipados-15-and-macos-monterey/