1.8 Patch notes

[kandrathe]

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The Arcane Missiles fix seems to mean that the rather useful pvp feature of starting to channel against an opponent who is running out of range allows you to get the full spell off, no matter how far away they go is removed. There are fixes/nerfs to Frost Armour persisting through Vanish and Druid shapechange
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I did some tests in the Barrens with my mage initially targeting lvl 1 fauna, then switching targets to things on the far range of my vision. No problem, easily 100-150 yard range. Charging beasts would die still at range, with all 4-5 missiles completed. So, not just out of range, but WELL out of range. You could stand well outside guard aggro radius at the Crossroads and kill flagged Horde well within the town, or vice-versa if you had a target within range. It's easier from the outside in, than the inside out. :-) HUGE EXPLOIT!