People tend to think that a new version is an improved or better one.
Improving, or making it better is usually the last on the list of the manufactures reason for issuing a new version.
A lot of time it due to expired contract with a cheapest maker, or a shortage of parts, or retooling the manufacture Robots to share the assembly line with other products, or just a marketing strategy (ploy) due to circumstances that we unaware of.
If my current hardware is lacking of something specific that I need, I would find a new ?Gizmo? that can do what I need, otherwise I leave it alone.
I have a bunch of SMC 7004BR (circa 2001) they do perfectly what they need to do. Getting is new plastic box will not make it better.