Just got this via e-mail re: the supposed Samsung Within for Sprint ... Take it as you will.
The post which showed picture of Sprint's new Samsung phone (without
keyboard) is actually a code name "Samsung Gahudi". It is 4.5 inch super
amoled+ phone. The back casing may change it is a huge phone. Colors are
vibrant and it has SprintID. I personally liked the phone but Sprint ID is a
deal breaker for me. You can switch from using Sprint ID or Touchwiz UI. I
have played with this device as I am doing testing of SprintID. The code name is
Gahudi.