This means the first round of votes (deadline January 4) will determine the nominees, and the second round (early February) will determine the winners. Previously, the first January deadline only narrowed down contenders to a longlist of fifteen names, which then had to be winowed to five nominations.
Also for the first time, BAFTA's entire membership will vote for the winners in each of the eleven "below-the-line" categories. The nominees in those categories, however, will have been selected by the specific BAFTA chapters. These below-the-line categories include adapted and original screenplay, direction, cinematography, editing, costume design, makeup and hair, original music, production design, sound and special visual effects.
This switches the old system, where the entire membership voted on the first and second rounds and only the chapters voted on the winners.
Variety reports that those opposed to the changes fear the new system will Oscar-ize the BAFTAs. There could be a lack of field-specific nuance, with a few popular films sweeping the awards.