http://www.footballshirtculture.com/13/14-kits/brentford-2013-2014-adidas-home-football-shirt.html
Latest Adidas stripy template. Can almost guarantee after a change of colour, this will be our new kit
EDIT: http://www.live4soccer.co.uk/blog/products-news/201314-adidas-teamwear-range-out-now/
Looks like that is the range of Adidas templates for the coming season, so chances are the away kit/any one-off kits will be one of these.