Prochard I'm only guessing you meant SC scoring changes, apologies if you actually meant AFL rule changes. (which I'm not sure there are any this year, well hopefully not anyway).
There are four SC scoring changes mentioned in the AFL Prospectus 2015...
1: Rather than awarding one point for all hitouts, there will be zero points allocated.
2: But the value of a hitout-to-advantage has risen from three points to five, rewarding quality over quantity.
3: The points allocated to the player that wins a gather from a hitout has also dropped slightly, as more credit will be given to the effective hitout.
4: The state of game weighting will be capped at a multiplier of two (instead of four), which means standing up in close games will still be rewarded but won't be as drastic as previous seasons.