February 04, 2015 Patch
Fixed Blinking while in the initial Tether pull causing the Tether range to be larger than intended.
November 18, 2014 Patch
Fixed the mechanism Armlet of Mordiggian icon.png Armlet of Mordiggian and Overcharge icon.png Overcharge to use proper health modification (meaning their health manipulation is now completely unaffected by anything).
July 18, 2013 Patch
Fixed Tether icon.png Tether sharing mana regeneration when you have full mana.
Fixed Spirits icon.png Spirits initially spawning 250 units away instead of 150 units.
June 14, 2013 Patch
Fixed Relocate icon.png Relocate not being interrupted if Io was only disabled in the cast time but not when the teleportation happened.
Fixed Relocate icon.png Relocate not getting interrupted by Root debuffs (Ensnare (Naga Siren) icon.png Ensnare, Overgrowth icon.png Overgrowth, etc).
Fixed Relocate icon.png Relocate not revealing Fog of War for enemies.
Fixed Relocate icon.png Relocate not showing the initial visual effect on the ground for enemies (only showed ping).
Fixed being able to return creeps with Relocate icon.png Relocate by Tether icon.png Tethering a creep after relocating.
Fixed Overcharge icon.png Overcharge missing a 2 second toggle cooldown.
March 28, 2013 Patch
Wisp name change to Io icon.png Io.
[Undocumented] Io icon.png Io changed back to blue from teal.
March 21, 2013 Patch
Fixed attack acquisition range on Disruptor icon.png Disruptor, Keeper of the Light icon.png Keeper of the Light, Io icon.png Io, Visage icon.png Visage and Medusa icon.png Medusa.
March 14, 2013 Patch
Fixed Tether icon.png Tether sometimes ending prematurely if Relocate icon.png Relocate was cast before Tether icon.png Tether.
Fixed Relocate icon.png Relocated units sometimes walking away to do a previous order.
December 06, 2012 Patch
Updated the textures for Death Prophet icon.png Death Prophet, Silencer icon.png Silencer, Drow Ranger icon.png Drow Ranger, and Io icon.png Io.
Updated the ability icons for Death Prophet icon.png Death Prophet, Silencer icon.png Silencer, and Io icon.png Io to match texture changes.
November 08, 2012 Patch
Fixed Spirits icon.png Spirits dying if Io gets cycloned or purged.
Fixed Tether icon.png Tether targeting spell immune allies.
September 21, 2012 Patch
Fixed being able to Relocate icon.png Relocate a Tether icon.png Tethered creep to the enemy base.
August 02, 2012 Patch
Fixed Chakra Magic icon.png Chakra Magic mana regen not transfering over Tether icon.png Tether.
July 19, 2012 Patch
Fixed Spirits icon.png Spirits detonating on non-hero units like Spirit Bear.
July 12, 2012 Patch
Fixed Spirits icon.png Spirits exploding on illusions.
Fixed Relocate icon.png Relocate to not teleport Io while dead.
July 05, 2012 Patch
Enabled Rubick icon.png Rubick, Io icon.png Io, and Luna icon.png Luna in Captain's Mode.
Fixed Magic Stick icon.png Magic Stick interaction with Tether icon.png Tether.
Overcharge icon.png Overcharge and the two Spirits icon.png Spirits control sub abilities no longer proc Magic Stick icon.png Magic Stick.
Spirits icon.png Spirits no longer don't retain their
vision after they explode.
Fixed Relocate icon.png Relocate's return not interrupting other channeling spells (like Town Portal Scroll icon.png Town Portal Scroll).
Fixed heroes continuing old movement orders after returning with Relocate icon.png Relocate.
Fixed Soul Ring icon.png Soul Ring not working with Tether icon.png Tether.
Fixes for Io's rendering with pops and such when entering/leaving FoW.
Fixed Io voice lipsync getting stuck on with random noise.
Fixed ranged display stomping on ambient effects, including Io.
Fixed Tether icon.png Tether being left behind when enemy teleported into FoW.
Changed Io Explosion Effects.
Added more obvious Tether icon.png Tether boundary effect.
Tether icon.png Tether now shows the amount that it heals its target.
Spirits icon.png Spirits no longer show up on the minimap.
Io and his tethered unit move their camera when they Relocate icon.png Relocate and Relocate back.
The Relocate icon.png Relocate sound stops correctly now.
June 28, 2012 Patch
Added Luna icon.png Luna, Io icon.png Io.