Up until 2012, all the 25 Year Old and 30 Year Old releases had a bottling date on them. However, the 2013 releases appear to have no date, but do have bottle numbers.
Anyway, I found some of these undated releases at a really excellent price and snaffled a few for future drinking. But would be interested if anyone has any idea about the above.
All but one(the 2001 release,) of the 25 yo and 30 yo releases are non-vintage. The bottles simply state 25 / 30 years old, which means that the youngest whisky in the bottle is of that specific age, 25 or 30 years old. There can be older whiskies in the vatting aswell. Year of bottling does not give you the vintage.
All of these Talisker 20, 25yo:s have vintage mentioned on the labels if there is a vintage to be mentioned. It can be found just below the bottle number on the top right corner of the label.
The change from cask strength of the 25 and 30 yo to the diluted versions, 45,8% , is simply just so that they can get out more bottles, without using more casks. Cask strength versions will continue in the now a "Special Release" "special price" series....