Looks like HTC is showering some update love on the owners of Desire HD and Incredible S.
The update is a major one, given that it bumps up the Sense UI version to 3.0, and Gingerbread version to 2.3.5. Some users in the Netherlands have reported that they have already got the update, and have installed it successfully.
Obviously, it doesn’t seem like a global roll out, just yet. Neither has HTC said anything officially about this. If you happen to own either of the above two devices, you should try checking for updates manually, and keeping an eye on the notifications.
Oh, Manual Check for update — Settings –> About Phone –> Software Updates –> Check Now.