Seidio has officially announced they're coming out with a slim extended battery. The new battery will be added to their current lineup of 1350 mAh and 2600 mAh offerings. No pictures, pricing, release date or rated capacity yet, but they have posted the following in their product description:
"This Innocell Extended Life Battery is designed for the customer who needs extra life, but doesn't want to add any thickness to their device. This model fits in your device's existing battery space and doesn't require a replacement door, which makes it a perfect replacement for your original battery."