Just remember that since Ardbeg wasn't operating
during the mid 90's that means that ALL of the 10yo
they have been releasing for the past 8 years
has had older stuff in it.
Sorry but Ardbeg was
distilling in the Mid 90's .
Ardbeg restarted production under Allied in Nov 1989 , Allied produced right through until late 1996 , After Glenmorangie bought it off them , they started a limited production on 25th June 1997 , full production didn't occur until 1998 hence all the Very Youngs (Committee Approved) / Still Youngs / The soon to be Almost There and the next spanking new 10yo are all 1998 distillations , only the Very Young (For Committee Approval ) was 1997 .
The Ten have been 10 year olds seeing as stock was available , the First Ten in 2000 contained 1990 , 2001 - 1991 etc etc .
The Old "Allied" Guaranteed 10yo contained older stocks (supposedly 13yo but it would have had to seeing it was released in the early 1990's and Ardbeg was mothballed from 1982-1989).
The only time you might get older stock in the current TEN is if they do a batch this year to cover till the all Glenmorangie distilled Ten comes out in 2008 and then it could be only 11yo due to the dates !
Of course there's always the chance that the current 10yo might contain older ( 11/12/13yo ) stock to get the balance of the vatting right but all distillers do this to get the expression they want.......