Does Pathfinder 2e Playtest fix the “linear fighters, quadratic wizards” problem?

It is generally accepted that a reasonably optimized DnD 3.5e wizard will wipe the floor with even a well optimized DnD 3.5e fighter by high levels, often known as “linear fighters, quadratic wizards”. Pathfinder 1e removed or nerfed a few of the easiest tricks for this (e.g. polymorph) but probably actually makes the problem worse.

Is there any evidence from the Pathfinder 2e playtest materials currently available that there is any serious attempt to fix this issue, or the more general issue of class balance?