The 13" MacBook Pro with Haptic Feedback ForceTouch trackpad weight 3.48 pounds with up to 10 hour usage. The 15" is 4.49 pounds with up to 9 hour usage. . . The Sony Vaio 15" competitor for the MacBook Pro with similar specs weights 5.73 pounds and offers 4 hours of usage.
You are going to have to wait a few more years before that weight will come down much more than that.
Good info, thanks!