Uinta Birthday Suit has more than one version

There is some confusion on this I would like to clear up. The only listing currently on BA is as simply "Birthday Suit" but this is last year's version, the 19th Birthday Suit, a sour cherry ale that's really quite fantastic. Lately I've seen some folks reviewing the new 20th Birthday Suit, which is a less wonderful sour brown ale, under the same original posting. Is there some kind of protocol to fix this and create two separate listings other than the simple "Update" button which fixes things like spelling errors and abv corrections? Would it be better just to add the new one correctly and let folks figure it out? Are there other beers like this where the annual release is always different but not specified here on BA? Any info would be dope, cheers.