The following amended and new rules and forms became effective December 1, 2025:

Federal Rules of Civil Procedure:
Rule 16 Pretrial Conferences; Scheduling; Management 
Rule 16.1 Multidistrict Litigation [new rule]
Rule 26 Duty to Disclose; General Provisions Governing Discovery

Federal Rules of Appellate Procedure:

Rule 6 Appeal in a Bankruptcy Case or Proceeding 
Rule 39 Costs 

Federal Rules of Bankruptcy Procedure:

Rule 3002.1 Chapter 13—Claim Secured by a Security Interest in the Debtor’s Principal Residence 
Rule 8006 Certifying a Direct Appeal to the Court of Appeals
Bankruptcy Official Forms 410S1, 410C13-M1, 410C13-M1R, 410C13-N, 410C13-NR, 410C13-M2, and 410C13-M2R

Links to the revised rules may be found here.