I love reading Wired and I've been looking forward to a digital version of it on a device like the iPad for 5, or more, years. It really is my dream Wired-reading experience.
But I have to agree with the sentiments expressed by most others in this thread — physical issue price? It's just downright wrong.
Anyone who has come into contact with full-color printing costs knows how incredibly expensive a magazine like Wired costs to manufacture. But it's not even the manufacturing, it's the retailer margin and the distribution. I can almost guarantee that Wired make no money from the $4.99 you pay in a store, they get everything from the ads.
And they're now in the ideal situation where they can rid all those eco-unfriendly costs and make it a 100% free magazine; earning, not just the usual revenue from their advertisers, but substantially increased revenue due to the fact that they could likely double, if not quintuple their readership numbers by the fact the magazine would now be free.
I sincerely hope the price is experimental. Otherwise, I can't ever see myself moving over to the digital versions. (Yes, even despite it being my dream of five years, that dream included digital magazines all being free and we'd all have a better world because of it.)