A film I produced this year, which was screened at a film festival last weekend, is listed as "2018/V". It was not made for tv, yet I can see no way to amend this. My previous listing simply showed the year of release.
Steve: Does your film have a very common title? It looks like the "2018/V" here is meant to indicate that your film is the 5th film with the same title this year (the "V" would be the roman numeral for 5).
If you post the link to your film's page, the contributors here can check it out and see whether that is indeed the situation.
For clarity, if you had a film with a common title such as "The Escape", then The Escape (2018/V) would be the official IMDb title of the fifth film by that name from 2018. By contrast, The Escape (2018) (V), where the (V) is in a separate parenthetical from the year, would be the official title of a made-for-video production by that name. A made-for-TV production would be The Escape (2018) (TV).