It looks like the first Ubuntu Touch tablet will ship in October 2013 (estimated). The news doesn't come from Canonical so I'm not sure how legit this is, but from a website that advertises "Intermatrix U7 and U10 Ubuntu Tablets" as the world's first Ubuntu tablets.

Enthusiasts can already pre-oder the Intermatrix U7 (with U10 probably to follow soon), for which the price has currently been set to AU$269 (around US$275 or €210), including shipping costs, and it appears to be available world-wide (any country DHL can ship to). The price may change in the future, but those who pre-order it now won't have to pay more if the price will increase and will get a refund if the final price will be lower. There's also a 10% discount for the first 50 customers, limited to 1 discount per unity/customer.

Intermatrix U7 Ubuntu Touch tablet Specifications

The Intermatrix U7 Ubuntu tablet will use Ubuntu Touch by default and should weight about 110 grams. Here are the full hardware specs:

CPU: 1.5GHz Quad-Core Cortex A9;

GPU: Quad Core Vivante GC1000+;

RAM: 1 GB;

Flash storage: 16 GB;

Expansion slot: microSD Card Slot;

Display size: 7-inch IPS Capacitive Touchscreen @ 1280x800 (with a pixel density of ~275 PPI);

Camera: primary 2 MP, secondary 0.3 MP;

Connectivity: microUSB 2.0, HDMI 1.4, WLAN 802.11 b/g/n and 3.5 mm Audio Jack.