/u/Reinboom, the Lead Modes Designer, tweeted:
With this next run of URF, there will be quite a few changes to better embrace the preseason item rework. These changes are intended to let you engage with the item system more fully without hitting clear traps.
Changes include:
Instead of 80% CDR you now get +300 Ability Haste. This stacks with other sources of Ability Haste
Lethal Tempo and Ultimate Hunter are no longer disabled
If you're a mana champ: Bonus mana is converted to HP (40% rate) and bonus mana regen is converted to HP (100% rate)
The gold per 10 items will be disabled though. Their minion gold penalty they give is at such an extreme penalty that is difficult to perceive that not having them available would ultimately lead to better experiences, especially for newcomers to URF.
Edit: This run is going to AURF in 11.3. For anyone curious 300 haste is equivalent to 75% CDR, and it's intended:
External link →Yep, it's a reduction overall.
We're interested in potentially bringing it back up with a future run, but there was enough issues when reaching super high values of ability haste that we're starting with the 300 amount first so that we have time to fix things.