[MrOwen]

Are you aware a portion of this functionality exists already, albeit implemented in a very dark pattern? Go to reviews and in the filtering options, select the variation of the product you're viewing and sort by newest. You'll be able to spot when they changed the product typically and then get a feel for how current product is being reviewed.

[Broken_Hippo]

You shouldn't have to. If you look at the reviews for product A, you should be getting reviews for product A. If they've updated product A, it is still product A and they can let you know that it was for an old version.

Google already does this for games and apps on their play store.

You shouldn't have to sort because companies are showing you reviews for product A, but you are looking at product B. These aren't even reviewing the same product. It is dishonest, and the consumer shouldn't be the one with the responsibility here.