Ah, I think I found it. Schedule I has an interaction with old HSA users. The form may have already been released but an issue cropped up after the release. Thus the message about waiting for a new update for the small percentage of Wisconsin users to whom this would apply.
Here is background for HSAs and Wisconsin.
Line 2a on "2022 Wisconsin Schedule I Instructions" says
"(a) Federal – Certain individuals may establish health savings accounts (HSAs) under sec. 223, IRC. A deduction is allowed for contributions to the account. Amounts contributed by an employer to an employee’s account are excluded from the employee’s gross income. (Section 307 of Public Law 109-432). (b) Wisconsin – The federal provisions relating to HSAs apply for Wisconsin for 2011-2022. However, an adjustment may be required if you withdrew from the account in 2022, you had an HSA prior to 2011 for which you were not allowed a deduction for Wisconsin for contributions to that account, and you reported the earnings on the account as income on your Wisconsin return. If this is the case, complete the worksheet on the next page."
This sounds new compared to previous years, which would explain the message you are receiving.
The following I used every year up to 2021 to explain that screen in the Wisconsin interview that confused Wisconsin taxpayers:
"If you made contributions to an HSA prior to 2011, Wisconsin did not permit the deduction of such contributions. However, subsequent to 2010, Wisconsin passed a law that enabled you to make adjustments to your current income in order to simulate taking the HSA contributions prior to 2010.
NOTE: this applies ONLY if you were in Wisconsin prior to 2011, filing a state return, and contributing to an HSA at the federal level. If not, leave the section blank and continue.
In the Wisconsin interview (where I assume you have the question), the first line asks you for the value of your HSA in 2010, less distributions made in 2011, 2012, 2013, and 2014.
The second line asks for your HSA distributions in 2022. Note that this is all expenses (even perhaps for non-medical ones).
The third line asks for which of the 2022 distributions were for qualified medical expenses...BUT you are expected to enter no large than the amount in the first line - that is, it is really asking for "what part of the remaining pre-2011 HSA value did you distribute in 2022 for qualified medical expenses?" Viewed this way, because you are charging off some of the 2022 distributions against it the remaining pre-2011 HSA value, it's clear that you can't use more than the remaining pre-2011 HSA amount in 2022 for this purpose.
Just limit the third entry to be no larger than the first entry, and the return will be correct."
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