"Because the draft revised Form 5300 contains numerous changes, plan sponsors and their advisors will need to carefully review the revised instructions, once they are finalized, in anticipation of submitting a Form 5300. Although the IRS did not propose an effective date for the revised Form 5300, it could replace the current version effective for determination letter submissions filed as early as February 1, 2013 (i.e., effective for Cycle C filers)."