Asa Dotzler who is best known for his work in development of the Firefox browser through its evolution from his volunteer work when Netscape released Mozilla as open source, just posted on his blog that Mozilla is testing the first Firefox OS tablet.
The first ever Firefox OS tablet has these specs:
Brand/Model: InFocus New tab F1, Wi-Fi
Processor: A31 (ARM Cortex A7) Quad-Core 1.0GHz w/ PowerVR SGX544MP2 GPU
Memory: 2GB DDR3
Hard Disk: 16GB Flash
Screen: 10.1 IPS capacitive multi-touch @ 1280x800
Camera: Dual cameras, 2MP/5MP
Wireless Network: 802.11b/g/n
Ports: Micro SD, Micro USB, headphone
Other: GPS, Bluetooth, Gyroscope
Battery:7000mAh
Width: 9.4 mm