The Fiora patch notes were just posted up on the League site, nothing too surprising, considering most of these changes have been listed in the PBE notes for a while now, but we've stuck some of the more interesting things into a Red Quote below. If you want to find out all of the rest of the stuff, be sure to hit that source link.
Originally Posted by Udyr
Lux
- Lucent Singularity
- Now additionally grants vision while in flight to its destination
- Now starts its cooldown when cast rather than when detonated
- Cooldown increased to 10 seconds from 9
- Now displays a buff showing how long Lucent Singularity will last until it automatically detonates
- Finales Funkeln
- Now grants vision of the affected area during the spell and vision of enemy champions hit for a short duration afterwards
- Lux can no longer use Flash while casting Finales Funkeln
Olaf
- Axe Throw
- Damage increased to 80-260 from 50-210
- Scaling changed to +1.0 bonus AD from +0.5 total AD
- Base cooldown reduced to 8 seconds from 10
- Cooldown reduction for picking up the axe reduced to 4.5 seconds from 6
- Ragnarok now provides 30/45/60 Armor and Magic Resist instead of 20/30/40 flat damage reduction
- Movement Speed increased to 325 from 320
General
- Improved minimap visibility of turrets in Colorblind Mode
- Colorblind announcement colors now reference blue (friendly) and purple (enemy) teams
- Important items purchased by your team will now be called out in chat (Aura items, Sight and Vision Wards, top tier items, etc)
- Champion Kill messages are now more specific
- You can now activate a timestamp for game chat in the options menu
- When colorblind mode is activated, movement cursor is included with new color scheme (was not before)
- Announcer callouts no longer reference blue team/purple team, and instead should reference friendly/enemy team (ie. A friendly inhibitor is respawning soon/the enemy inhibitor has respawned)
- Champions will now attempt to run home immediately when disconnecting, rather than attempting to Recall
- Small monster camp sigils now restore up to 30 Mana in addition to Health
- Small Golem camp
- Movement Speed increased to 300 from 180
- Medium Golem base damage increased to 59 from 54
- Fixed a bug where whisper messages were the wrong color
Source