T-Mobile now bundles unlimited Wi-Fi and unlimited GPRS/EDGE for just $29.99 per month for voice subscribers: I don't know when these charges changed, but my friend and colleague Steve Manes, Forbes Magazine's technology columnist, mentioned this in passing in a phone call today. He'd been trying to renew his Treo service with T-Mobile when his old unit died and was told about this new deal.
I tried to find any announcement about this or any coverage, and bupkes. It's possible it flew under the radar. But it's a great deal. While GPRS runs at modem speeds downstream and usually less upstream, EDGE can provide a consistent rate of over 100 Kbps down and about half up. Coupled with Wi-Fi, for the right kind of business traveler or college student, this is a very inexpensive alternative for ubiquitous access.
The T-Mobile Internet plan requires a phone purchase, so make sure you get an EDGE capable phone through which to use the 2.5G service.