The currently best selling Android tablet, the Asus EEE Pad Transformer will have its 3G version released soon and it is estimated to be priced at 499 Euros. This 3G version is expected to be released sometime in August but we're not sure on when it'll be released to the rest of the world.
The specifications are pretty much the same apart from the obvious 3G slot which was previously supposed to replace the microSD slot, but now instead, it is placed on the left hand side of the tablet, in between the left speaker and the volume rockers as you can see pictured above. So for those of you who are holding out on purchasing the Transformer, you might consider waiting for this new 3G version to be released for an extra connectivity option on the go.
Source: Transformer Forums