The attack speed affix has been reduced significantly on all items. The following list outlines all of the previous values and new values for each affix level. This should give you a rough idea of how much IAS you should expect to lose.
UPDATE: IAS on Quivers appears to be unchanged, I checked a few (including Dead Man's Legacy) and they retained their pre 1.0.3 values.
Weapons
Haste 1: Old: (2-3%) New: (2%)
Haste 2: Old: (4-5%) New: (2%)
Haste 3: Old: (6-7%) New: (2-3%)
Haste 4: Old: (8-9%) New: (2-3%)
Haste 5: Old: (10-11%) New: (3-4%)
Haste 6: Old: (12-13%) New: (3-4%)
Haste 7: Old: (14-15%) New: (5%)
Haste 8: Old: (16-17%) New: (6-7%)
Haste 9: Old: (18-19%) New: (8-9%)
Haste 10: Old: (20-25%) New: (10-11%)
Other Types (Rings, Amulet, Gloves, Legendaries)
Haste 1: Old: (2-3%) New: (2%)
Haste 2: Old: (4-5%) New: (2-3%)
Haste 3: Old: (6-7%) New: (3-4%)
Haste 4: Old: (8-9%) New: (3-4%)
Haste 5: Old: (10-11%) New: (4-5%)
Haste 6: Old: (12-13%) New: (5-6%)
Haste 7: Old: (14-15%) New: (6-7%)
Haste 8: Old: (16-17%) New: (8-9%)
Crafting
Jeweler
Crafting fees for the following gems have been updated, in addition, the following combines only require 2 gems (down from 3). The crafting fees and gem requirements for levels above Flawless Square were not changed.
Flawless Square: 100g (previously 20,000g)
Square: 85g (previously 7,500g)
Radiant: 70g (previously 3,500g)
Perfect: 55g (previously 2,000g)
Flawless: 40g (previously 1,250g)
Normal: 25g (previously 750g)
Flawed: 10g (previously 500g)
Blacksmith
Crafting fees and reagent requirements for many recipes have been reduced. We've listed all of the new costs of the inferno recipes below (those that are learned outside of training). The Exalted Grand recipes have not changed in cost or material requirements.
Exalted: Behemoth, Doomcaster, Mythical Staff, Oni Blade, Phantom Bow, Sagaris, Slag Hammer, Zhezl Now requires 42,036g, 23 Exquisite Essences, 3 Iridescent Tears, 7 Tome of Secrets Down from 97,180g, 29 Exquisite Essences, 7 Iridescent Tears, 8 Tome of Secrets
Exalted: Conquest Sword, Crag Hammer, Dread Shield, Galraki, Golden Talon, Impellor, Massacre Axe, Orbit Stones, Piercer, Runic Quiver, Strike Wand, Unspeakable Thing Now requires 40,680g, 20 Exquisite Essences, 3 Iridescent Tears, 6 Tome of Secrets Down from 94,920g, 27 Exquisite Essences, 7 Iridescent Tears, 8 Tome of Secrets
Exalted: Pallium Now requires 29,832g, 14 Exquisite Essences, 3 Iridescent Tears, 4 Tome of Secrets Down from 49,720g, 14 Exquisite Essences, 3 Iridescent Tears, 4 Tome of Secrets
Exalted: Sovereign Mail, Sovereign Helm Now requires 31,188g, 18 Exquisite Essences, 3 Iridescent Tears, 5 Tome of Secrets Down from 51,980g, 18 Exquisite Essences, 3 Iridescent Tears, 5 Tome of Secrets
Exalted Fine: Behemoth, Doomcaster, Mythical Staff, Oni Blade, Phantom Bow, Sagaris, Slag Hammer, Zhezl Now requires 59,768g, 32 Exquisite Essences, 4 Iridescent Tears, 10 Tome of Secrets Down from 134,719g, 41 Exquisite Essences, 8 Iridescent Tears, 12 Tome of Secrets
Exalted Fine: Conquest Sword, Crag Hammer, Dread Shield, Flesh Ripper, Galraki, Golden Talon, Impellor, Massacre Axe, Orbit Stones, Piercer, Runic Quiver, Strike Wand, Unspeakable Thing Now requires 57,840g, 29 Exquisite Essences, 4 Iridescent Tears, 8 Tome of Secrets Down from 131,586g, 38 Exquisite Essences, 8 Iridescent Tears, 11 Tome of Secrets
Exalted Fine: Armplates, Heaven Strand, Pallium Now requires 42,416g, 20 Exquisite Essences, 4 Iridescent Tears, 6 Tome of Secrets Down from 68,926g, 20 Exquisite Essences, 4 Iridescent Tears, 6 Tome of Secrets
Exalted Fine: Sovereign Helm, Sovereign Mail, Sovereign Tassets Now requires 44,344g, 25 Exquisite Essences, 4 Iridescent Tears, 7 Tome of Secrets Down from 72,059g, 25 Exquisite Essences, 4 Iridescent Tears, 7 Tome of Secrets
Exalted Fine: Sovereign Greaves, Sovereign Vambraces Now requires 42,416g, 20 Exquisite Essences, 4 Iridescent Tears, 6 Tome of Secrets Down from 68,926g, 20 Exquisite Essences, 4 Iridescent Tears, 6 Tome of Secrets