Archos has just extended its low-cost Arnova tablet line with a new 8-inch sized model dubbed the Arnova 8b G2. For the most part the tablet appears to be much like the existing Arnova 8 G2 which has been on the market for a few months, only the new 8b model has a different looking case design and does away with physical buttons such as home, back, menu and search.

While the tablet ships with a cobwebbed version of Android (2.3 Gingerbread), the removal of physical buttons suggests that Archos might be planning to roll out an Android 4.0 update for it sometime soon. Dimensions of the Arnova 8b G2 are 8.8″ x 6.1″ x 0.5″ with a weight of 1.1 pounds.

The tablet features a 1 GHz ARM Cortex-A8 single core processor, an 8 inch, 800 x 600 pixel capacitive multitouch display, 4GB to 8GB of storage and 512MB of RAM.

It also has a front-facing camera, mic, g-sensor, and speaker and supports 802.11b/g WiFi. There’s a microSDHC card slot for extra storage.

According to the spec sheet, the tablet also supports the optional Archos 3G USB stick and USB host cable if you want to connect to mobile broadband networks or hook up a camera, USB flash drive, or other device.

The Arnova 8b G2 measures 8.8? x 6.1? x 0.5? and weighs 1.1 pounds.

Archos hasn’t unveiled the price or release date for the new tablet yet, but the original Arnova 8 G2 sells for as little as $149.