Some of the updates in version 1.5 include an on-screen keyboard, new Home screen widget support, support for video playback and video capture, upload of videos directly to YouTube, A2DP Bluetooth stereo support, and more. As I mentioned, I rooted my G1 and updated already and find the improvements are nice to have. I understand that rooting or modifying your G1 may prevent the OTA update from appearing so I spent some time getting my G1 back into factory order and may not mess around with it anymore. I plan to install the official T-Mobile update though since a few pieces are missing in the HTC developer update, including Amazon MP3, all the IM clients, and more.