HTC launched an update 2.50.405.2 for the HTC Desire HD today, to fix the WiFi bug in some unlucky devices. The update still doesnt bring the Sense UI 3.0 to Desire HD, probably because it was ment to fix only the WiFi problem.
Anyways users seem satisfied with the update as they experienced an improvement on the wireless connection, no more sudden drops.
This is a small list we picked up from users comments on the XDA Forums after the update has been made:
– GPS lock after 2 secondes.
– WIFI is better.
– Hebrew (with many wrong translations) was added to sense.
– Fixed Facebook fro HTC sense pictures sync issue.
– Added Android Traffic widget??
– some users experience clock problems having to manually set the clock from time to time
– some have GPS problems after the update
source: XDA Forums