Specifically, the following are worth noticing:
1. It clarifies that the Tax Cuts and Jobs Act (TCJA) provisions allowing up to $10,000/year to be paid for a beneficiary for K-12 expenses as Qualified Higher Education Expenses (QHEEs) includes any elementary or secondary school, public or private or religious.
2. It re-affirms that 529 college savings plans can now be rolled over to a 529A ABLE account for a special needs beneficiary, and clarifies that the rollover can occur either to a 529A plan for the same beneficiary or for a special needs beneficiary who is a member of the same family (given that the 529 plan itself could have been rolled to another family member and then moved to a 529A plan anyway), though the maximum dollar amount to be transferred in any particular year is still capped at the annual gift tax exclusion amount (currently $15,000/year, and aggregated with any other 529A contributions that year) and the rollover must occur within 60 days of the prior distribution.
3. It clarifies, as part of the PATH Act of 2015, that students who receive a tuition refund from a school may re-contribute those dollars back to a 529 plan and treat the entire amount as a recontribution of principal (as it’s not administratively feasible to track how much of a partial tuition refund should be allocated to principal versus growth anyway).