Kindle Team responds
at the Amazon Kindle forum thread. At the link, you’ll see the now clear answer to the questions asked over the last 3 days:

‘Posted on Oct 2, 2011 4:42:59 PM PDT

The Amazon Kindle team says:

We apologize for the confusion. Our new Kindle Touch 3G enables you to connect to the Kindle Store, download books and periodicals, and access Wikipedia – all over 3G or Wi-Fi.

Experimental web browsing (outside of Wikipedia) on Kindle Touch 3G is only available over Wi-Fi.

Our Kindle Keyboard 3G will continue to offer experimental web browsing over 3G or Wi-Fi. ‘

All bolding mine, of course, to emphasize the most salient points.

Finally! Thanks, KTeam.  I do appreciate the confirmation, too, that the Kindle Keyboard 3G model (UK: Kindle Keybd 3G) will continue to allow the experimental free web browsing.

Via A Kindle World Blog