Seidio 3500mAh can be pre-ordered =]
 

I just saw and it shows as it is up for pre-order again! ships out on the week of 1/15.

http://www.seidioonline.com/product-p/bacy35htp2-bk.htm

sorry if this is useless. would anyone say this one is better as a mugen as I was waiting for this exact thing lol =P