The Hobby Boss Awfulschmitt Bf.109Gs were announced (http://www.britmodeller.com/forums/index.php?/topic/234973111-148-messerschmitt-bf109g-2-g-6-by-hobby-boss-release-in-20152016) but not the 1/48th Messerschmitt Bf.109F-4 - ref.81749.
Release is announced for late August 2015. So should be available in the best hobbyshops in September-October.
Source: http://www.hobbyboss.com/index.php?g=home&m=article&a=show&id=44&l=en
V.P.