HTC has just released a new update for the Desire. Specifically, OTA update 2.29.405.2 is starting to pop up on unlocked handsets. No word yet on whether this will reach those with carrier-branded phones, but you can check by going into "About Phone" from Settings menu. The update is 28.87 MB, requiring 25 MB of internal memory in order to install. There are no noticeable changes seen by those who have received the update so this could be a maintenance update.