I filed my tax return, but did not reconcile my premium tax credit using Form 8962. Will I be re-enrolled with premium tax credits this year?

No, you must file your tax return AND reconcile your premium tax credits using Form 8962 for every year you received premium tax credits. Although you may still be eligible for marketplace coverage, the marketplace will discontinue premium tax credits for future coverage unless you contact the marketplace to obtain an updated eligibility determination.