I just unboxed my new K4B! It comes in a all black Kindle box.
I am in awe! The difference is breathtaking! The background on the K4B is near white just like my K3! Oh I am so happy I've got happy tears going at the moment! *sniff*
The text is black not near black but black
and this is using the condensed font.
The front bezel feels like black smooth plastic. It's a much nicer feel and no fingerprints! Very similar to the KF's shiny black. Woot!
The back feels a little more smoother but it's same backing just in black.
The page keys are not stiff at all! Just a little push and it turns the page. They feel is less clicky for lack of description. Now I can turn pages this easy I can read without my cover now if I want and not worry about dropping it with my tiny hands!
The glass is the same but maybe a different tint. It's really hard to tell. They have made some minor but wonderful improvements.
This is not a color trick or illusion as some would claim. The screen contrast between black and white is serious noticeably.
Wow Amazon you have me again!
I will check it to the K3 after I upgrade the firmware. K4B has blacker text than K3 will see if that is still true with 3.4.
Update: 3.4 did improve the K3's text contrast but the K4B is still better in both background and text contrast.