I think he just means the new iPhones will have 3.0.1 or something of the like, which will lock the phone again if you update or buy one with that firmware on it.
Yes, you're in luck. No matter what firmware version you have right now, your 3G is unlockable. Just update to 3.0, jailbreak and unlock.![]()
Who said that? If your bootloader is from September 2008 (or later), you can't unlock your iPhone 3G as of yet. Bootloader = not the same as baseband.