You’ll be able to download the browser from the Wii’s shopping channel until July 2007, at which point it will go on sale for a big old question-mark number of Wii points. Lest you think you’re paying for a craptastic browser, there will be Flash and AJAX support built-in, and you’ll be able to use the Wiimote to navigate.
I’ll also take this point to correct a story that we ran a while ago, in which we claimed that first-party Wii games were region-free. Turns out that that is very much not the case: all Wii games are region-locked. Very sad, but hardly surprising.