Once the deeming regulations went into effect there were three main changes:

1. No "New" Product Without FDA Approval — Officially speaking, no new product could be introduced after Aug. 8, 2016 without FDA approval. Because FDA has not finalized how to get approval, this effectively serves as an indefinite ban on new product. Many manufacturers have determined ways around this and a lawsuit in late 2016 opened another door for newly-branded products of existing cigars.
2. Free Samples Are Banned — In order for a manufacturer or retailer to provide a consumer with a cigar, there must be a transaction. This could be a buy five get one free promotion, a ticketed event or other, but a cigar can longer truly be "free." In addition, this prevents manufacturers from directly donating cigars to charities like Operation Cigars for Warriors.
3. 18 & Over, I.D. Until 27 — The deeming regulations also require all customers of tobacco in the U.S. to be 18 and that retailers check the identification of anyone buying tobacco who is under the age of 27.

FDA has delayed many of the deadlines for the more complex parts of the regulations including product approval and HPHC testing.

A D.C. Court delayed the requirements for warning labels for cigar and pipe tobacco products until 60 days after the resolution of the D.C. lawsuit.

More information about all dates can be found here.