Most of the recent "improvements" are marginal at best.
How many people really read in water regularly? They exist but not many. 1%? Less, most likely. More read in bed but the light change thing is more gimmick than boon. Yes, it works for some. Great. But the typical Kindle/Kobo buyer won't be basing buy/no-buy on that. More likely they were already going to buy or not buy.
What is really going on is that ebook readers are manufactured in batches.
Amazon was ready to order up a new batch of, in this case, Oasis and looked around and said: "What can we do to make it look like it's a *NEW* thing and not just more of the same?" Product marketing loves *NEW AND IMPROVED*.
It's called product refresh.
Here, this is what marketers tell themselves:
https://www.americanexpress.com/en-u...ct-or-service/
Amazon doesn't expect everybody with a working reader to suddenly throw the old one away. They just need something, anything, to justify NEW AND IMPROVED. If a few folks are thrilled by the new feature, well good and dandy. But that is not what they set out to do. They just set out to move a few more units of an existing product that already does all it needs to do to sell about as well as it's going to sell.
The new Oasis isn't going to take over the world.
Nobody expects it too.
It's just a classic product refresh.
Like a three year old car brand getting a new paint scheme or a new front end. Same old car underneath but with a slight facelift.
That is the new Oasis.