The talk is that they plan to make weapons more defined in 4e, here's some ideas I think they might try to create that effect.
Axe
Crushing Blow - Once per encounter when you gain a crit threat, you can add +4 to the confirmation roll.
Spear
Piercing Strike - Once per encounter you can make an attack roll that ignores 2 points of AC from armor.
Rapier
Parry - Once per encounter you may add +2 to your AC for a round.
Axe
Crushing Blow - Once per encounter when you gain a crit threat, you can add +4 to the confirmation roll.
Spear
Piercing Strike - Once per encounter you can make an attack roll that ignores 2 points of AC from armor.
Rapier
Parry - Once per encounter you may add +2 to your AC for a round.