Yes, section 601 is the section of the SECURE 2.0 Act that created SIMPLE Roth IRA accounts. The IRS has issued guidance saying that such a contribution is to be reported by the employer on Form W-2 as if it was a regular SIMPLE IRA contribution excluded from wages followed immediately by a taxable Roth conversion to a SIMPLE Roth IRA account, reported on Form 1099-R.
