From the Sprint HTC ONE community forum:
Sprint Community: 10/02 - HTC One Software Update - 3.04.651.2
HTC One Software Update - 3.04.651.2
Enhancements/Fixes
- Fixes issue where Swype does not automatically enter spaces in Exchange email
- Application Updates: Sprint Zone, Visual Voicemail
- HTC Sense stability improvements
- Updating OS from 4.1.2 to 4.3 (Minor update)
Important Notes
- Software version is 3.04.651.
Sprint Community: 10/02 - HTC One Software Update - 3.04.651.2
HTC One Software Update - 3.04.651.2
Enhancements/Fixes
- Fixes issue where Swype does not automatically enter spaces in Exchange email
- Application Updates: Sprint Zone, Visual Voicemail
- HTC Sense stability improvements
- Updating OS from 4.1.2 to 4.3 (Minor update)
Important Notes
- Software version is 3.04.651.