Went to International Plaza with Oscar and Spencer and bought my 32GB Black iPhone 3G S. Went smooth but took two hours, of course.
Then last night the Dev-Team announced the release of updated versions of their 3G S jailbreak (redsn0w) and unlock (ultrasn0w). (Previously, the unlock was very manual and for serious users only so I was waiting for something mainstream and hopefully already in use by many users and thus would have any kinks worked out.)
To ensure I’d always be able to unlock my firmware, I followed their linked-to instructions from iClarify.com on how to save my personalized and signed dfu/img3 files (two files). According to the article linked to in the previous paragraph, “As long as you have your personalized (signed) dfu/img3 files, you’ll always be able to jailbreak (even if you slip up and install stock Apple firmware in the future).” I don’t know how they’d be used but I went and acquired them and saved them. I’m even planning to commit them to SVN.