The iphone-dev team's pwnage hasn't been released yet, but will be soon. According to their blog, Apple's firmware update slowed them down a little, as has the 3G baseband, so what you'll get short term is:
iPhone (1st Gen) with 2.0 - Activated, Unlocked & Jailbroken, (with support for third party applications). iPod Touch with 2.0 - Activated & Jailbroken, (with support for third party applications). iPhone (3G) with 2.0 - Activated, Jailbroken (with support for third party applications).
Can't wait? Willing to risk mail order? Engadget Mobile says you can order a $1000 worth of unlocked iPhone 3G now:
According to the [Alibaba.com] wholesale goods supply site, you can just order up the "original" Apple device direct from a company called Union Camera and have them sent to whatever poorly lit dock, abandoned warehouse, or suburban safe-house you desire. The best part? They're network unlocked.
Dunno if I'd risk it yet. How about you?