Hi, i haven't seen this myself on the forums so thought i would post it and let everyone know. Geohot has created a custom bootloader, and although he has not publicly released it, it means that soon we should hopefully be able to install one of these custom bootloaders and never have to worry about unlocking or jailbreaking again. More info is here:

http://iphonejtag.blogspot.com/2008/02/update.html

James