Geeksphone has started taking pre-orders for the Peak+ Firefox-powered phone. Geeksphone typically makes phones targeted at devs or tech savvy enthusiast, but says the Peak+ is also ready for consumers.
It's a small upgrade over the regular Peak – the RAM has been doubled to 1GB and the material used for the exterior has been changed to make it feel better to the touch. The phone will come with Firefox OS 1.1 out of the box, the same version the other two (Peak and Keon) recently got.

Other than that, you're still getting a Snapdragon 8225 S4 Play chipset (dual-core Cortex-A5 at 1.2GHz, Adreno 203 GPU), 4.3" IPS screen qHD (540 x 960) resolution, 4GB storage plus microSD cards slot and a 1,800mAh battery.
The Geeksphone Peak+ pre-order is at a promo price of €150 ($200), the same as the original Peak. This price will go up slightly after the initial batch of units is sold out (there's no indication what the standard price will be). The original Peak sold out fairly quickly.
If you pre-order now, Geeksphone will ship your Peak+ in mid-September.