Brandon sent us a heads-up to this on-fire PreCentral.net forum thread where one lucky user, tomi666, has received and is installing the webOS 1.4 update as we post this. tomi666 happens to be on vacation in Vietnam. He writes "I’m on a German unlocked QWERTZ in Vietnam, roaming on a Dutch T-Mobile SIM."
This bodes quite well for the update hitting not just Sprint and Verizon, but unlocked GSM Palm Pre Phones as well on Feb 26th. Let’s hope that what we have waiting in store for us today is a worldwide rollout of webOS 1.4 on all carriers in all countries!
Thanks tomi666 and Brandon!
(Update: a few more screenshots here)