This is being extensively covered on Stirton and the International site TargetTalk on Pilkguns but for those on here who have not seen it, the ISSF has just published a summary of Approved Rule changes for 2013 and they are a bombshell.
Kept nicely quiet until leaked last week they will require changes to rifles, modification if possible to boots and trousers otherwise replacement, and they have effectively made all current jackets illegal by banning any seam on the left side of the jacket in the standing position. So that's new jackets, boots and trousers altered or replaced!
They have also banned "Vibration reduction systems" from pistols and rifles, which if literal would ban all current air rifles and air pistols back to about 1950, but there is some confusion as to what that means, most are interpreting it to mean muzzle brakes or even sight movement reduction systems like the anti wobble on cameras!
So we got no legacy from the Olympics and now our international body has shafted us! We don't need to worry about future legislation when we have an International governing body that is trying to close down the sport.
Robin