The 2.2 update promised more than just levels. It introduced:

In 2021, Geometry Dash reached a fever pitch of anticipation. Several major events fueled the "2208" hype: 1. The 10th Anniversary Hype

Some speculated that August (the 8th month) of 2021 would be the launch window.

The "2208" rumors of 2021 now stand as a testament to the community's dedication and the intense hype that surrounds one of the most successful indie games of all time.