#Note: Olympus 4.0's are going to be released on Summer 2020. There are going to be major improvements especially on the outsole.Olympus 4.0 updates deserve its own post

Altra Lone Peak 4.5's.The five upgrades took place going from Lone Peak 4.0 to 4.5:Improved tow-box durability (the issue with 4.0 is fixed), New lacing system now allows fine

Timp 1.5's.Timp saw an extensive revision going from 1.5 to 2.0, so it deserves its own post.SummaryThe two biggest updates from my perspective: Timp 2.0 now feels a