Sprint has announced that they will be releasing Android 2.1 Eclair update for Samsung Moment and HTC Hero by the end of this month.
An HTC forum member mentioned that the expected release date for Android 2.1 for HTC Hero could be 26 March, who spoke to HTC executive to troubleshoot his HTC Hero and had a conversation about the release date for the new firmware to fix issues related to HTC Hero.
Sprint has released the first over-the-air firmware update for HTC Hero. Sprint Hero Firmware 1.56.651.2 update is now available for download for Sprint users.
This update brings several issues that caused battery to drain out and fixes several other minor issues. You can initiate the update from the Settings > About Phone > System updates > Firmware update.