where is the official Samsung Extended battery?

[Mastaking]

I will never understand why they take so long to release official accessories.

I know there are aftermarket extended batteries out there but I want the one from Samsung.

 

[Raptor007]

Standard Samsung delay, delay, delay. By the time it arrives the GS4 will be coming out.

 

[Averix]

Supposedly out in European regions. Not sure when/if it will arrive in the US.
Android Central story.
MobileFun link.