You can order the Battlefront Imperial Shock Trooper at JTA affiliate Order Sixty Six Toys in Northern Ireland right now for an approximate March 2016 availability date. We don't know any information about this figure's availability in the USA yet. Order Sixty Six Toys also has many other exclusives available. If you live outside the USA, it might be worth your while securing them here. Check them out!
UPDATE: Out of stock at Order Sixty Six Toys!