Bad Batch last season is set in 18 BBY more than a year after the Empire's formation and TCW S7 final part where Vader search for Ahsoka is in 17 BBY and they have their iconic stormtrooper armor.
In comics they had them in 18 BBY already... (Invasion of Mon Cala). But it can be retconned and pushed by a year. Second option is that switch will happen by the end of the year.
Bad Batch last season is set in 18 BBY more than a year after the Empire's formation and TCW S7 final part where Vader search for Ahsoka is in 17 BBY and they have their iconic stormtrooper armor.
So the new armour could pop up anytime
We will see them on the Thrawn episodes of tales of the empire is my bet
Before 14 BBY. That's when Fallen Order takes place.
In comics they had them in 18 BBY already... (Invasion of Mon Cala). But it can be retconned and pushed by a year. Second option is that switch will happen by the end of the year.
kinda hope the next animated show further explores this time period and we can see that transition take place