Last week, when we were talking to Esty, he told us that all of there bottled beer is not being filtered with a .5 (I believe) micron filter. We tried some samples and it was interesting to note that their signature Ringwood yeast flavour was almost completely absent. Really changed the beer.
They did this to increase the shelf life of their bottled products. He said they'll get 5-7 months now. Anything you buy from a keg, however, is not being filtered. I think for the next meeting (@ brews), I'm going to pick up a growler of Best Bitter and 4 bottles from the liquor store to do a comparison.
Also worth noting is that Garrison in Halifax is a Ringwood brewery.