The HTC Desire family used to be close-knit, but then the Gingerbread update came along and gave preferential treatment to the Desire HD. Harmony may soon be restored though, because a number of Desire Z owners in Germany (and at least one in Hungary) have just received their OTA Android 2.3.3 updates, and the rest of Europe shouldn't be too far behind. At some point, the original Desire will also be allowed back at the Gingerbread table after all manner of divisive head-games -- possibly as soon as August
