To me it seems like they implemented multiple solutions to remove the bad parts of warband combat.
They made kick-slash not possible (imo good change)
They made body-turning feints harder/not spazzy, by making turning when holding an attack slower and limited (no spinning attacks). This is a great change imo.
They made blocking also have a small delay for some reason (I think this is bad as blocking become inconsistent and spamming becomes the solution especially for new players)
And they made the release delay, that we talk about here. I think this was made to avoid players holding an attack up into an enemy's face and then releasing. However, they implemented a change which make this not needed anymore; the inability to turn fast when holding an attack.
They made kick-slash not possible (imo good change)
They made body-turning feints harder/not spazzy, by making turning when holding an attack slower and limited (no spinning attacks). This is a great change imo.
They made blocking also have a small delay for some reason (I think this is bad as blocking become inconsistent and spamming becomes the solution especially for new players)
And they made the release delay, that we talk about here. I think this was made to avoid players holding an attack up into an enemy's face and then releasing. However, they implemented a change which make this not needed anymore; the inability to turn fast when holding an attack.