This year the Academy's rule changes are relatively small, but interesting nevertheless. For instance, Best Makeup will now be called Best Makeup and Hairstyling. In addition, Best Original Song nominees can now consist of four songwriters for a given song under certain circumstances. (I didn't even know that was an issue.) The Best Visual Effects shortlist must now be 10 films instead of 7-10, which makes sense given that it is whittled down to 5 nominees. Also, Best Foreign Language Film submissions no longer have to be screened in 35 mm or DCP in their home country. Nothing earth-shattering, but the Makeup change is a noteworthy amendment at least.
Press release here.
UPDATE: The Academy has also invited 176 people to become members.