CVS, the large pharmacy and other dry goods chain, recently announced that it would cease selling cigarettes and all other related tobacco products. However, in that they did not include Electronic Cigarettes or "E-Cigarettes" in that decision. Here is an article in TIME that goes into more detail.
Regular tobacco based cigarette smoking has been on a downward decline for some time now. But the sale of e-cigarettes have grown significantly.
Perhaps it was a stroke of public relations genius on CVS's part to cease selling a product that they believe is on the long term decline but leave open the possibility of selling a similar product that is on the rise.
It will be interesting to see what they do.