[2020] They Casually Buffed the Hell Out of Iron Grip Without Warning Anyone

From the tree.json:

 "12926": {
            "skill": 12926,
            "name": "Iron Grip",
            "icon": "Art\/2DArt\/SkillIcons\/passives\/KeystoneIronGrip.png",
            "isKeystone": true,
            "stats": [
                "Strength's damage bonus applies to Projectile Damage as well as Melee Damgae"
            ],
            "flavourText": [
                "Legend tells of bows so powerful that only giants could draw them back."
            ],

Iron grip now applies to *all* projectile damage, meaning a strength-stacking caster on the lower side of the tree might turn out to be interesting by scaling all spell damage with just strength.