The 2022 poverty guidelines are in effect as of January 12, 2022.

Here is a link to the page created by the Office of the Assistant Secretary for Planning and Evaluation in the Department of Health and Human Services. 
U.S. Federal Poverty Guidelines - 2022

In addition, HHS has provided a helpful excel chart with percentages of the guidelines (e.g., 125%), which is linked under “related content”  on the left side of the Web page, and on the right side of the ASPE page.

These new guidelines are in effect as of January 12, 2022, as noted on the HHS website.

The federal guidelines have also been posted to the Federal Register, and can be found at this link:
Federal Register Notice, January 12, 2022 - Full text.