Motocrossdigital is a free offroad Motosport magazine. I am a really big fan of this magazine and download it every month. It's always filled with the latest news, interviews, race reports and articles about new offroad technology. The also have a supermoto news section and a supermoto section with race reports and interviews. This month they interviewed S2 World Champion Adrien Chayere. Go download the magazine for free at www.motocrossdigital.com
I also recommend to download the november issue which has more supermoto content than the december issue.