Keep reading, the original rule change made the interval ten years.
NPGA petitioned to have rulemaking that would return the interval to 12 years. That rulemaking is still in process (according to the link, it has to be published in the Federal Register as a NPRM, Notice of Proposed Rulemaking).
The ten year rule, from how I read it, still stands, until the rulemaking to return it to 12 year is made a final action, which is has not yet "it is not a final rule" according to the article.
In the meantime, the ten year rule is not being enforced.
Here is the Electronic Code of Federal Regulations section that covers it.
https://www.ecfr.gov/cgi-bin/text-idx?SID=cf06245b43ef21a9cfc276d0411360d7&mc=true&node=se49.3.180_1209&rgn=div8Footnote (e).
I am fairly familiar with the rulemaking process, as it is very common in Aviation and, have written my share of comments for NPRM to attempt to sway the FAA to do or don't make a rule.
So yes, defacto, 12 years.
Charles