The upcoming season of Diablo 4 has implemented changes in everything from itemization to class balance, and crafting systems are no different. Elixir changes were revealed on the PTR, and we're seeing a big upgrade to existing Elixirs and two brand-new Elixirs!
All previous versions of Elixirs have been replaced with versions that provide materials on use (such as Potent Elixir of Cold Resistance), and there are now just two tiers per Elixir (i.e.
Elixir of Cold Resistance and Elixir of Cold Resistance II). This will help reduce the clutter of Elixirs in players' inventories that many kept around for the 5% experience bonus.
Previously, every single tier of an Elixir had a 5% experience bonus tied to it, and the effect of the Elixir would be the only scaling portion (i.e. Weak Elixir of Cold Resistance would increase Cold Resistance by +10%, maximum cold resistance by +2% and Heady Elixir of Cold Resistance increases Cold Resistance by +30%, Maximum Cold Resistance by +6%).