check sprint official page here to find the details

the initial release of the samsung moment software update was on 11/1/2009, that is the S:M900.8.0S.CJ05, the most latest samsung moment software update is S:M900.8.0S.CL14

according to sprint offical, the CL14 update includes some fixed and enhancements as follows:

- Network Assist GPS to allow indoor location fix
- Updates to several third-party apps, including Visual Voicemail, NFL, NASCAR and Sprint TV
- Change to Emergency Dial on lock screen
- Hard reset available in recovery mode: remove and reinsert battery; press volume down, send and end keys until reboot option pops up; scroll to wipe data/factory reset; press OK
- Various improvements to battery life

at present, the update Over-Air is not available yet, you must go to retail location with a Repair Center
Want to find your nearby sprint retail repair center?

Also, checking your samsung moment software version can be found as guides below:

From the Main screen, press Menu
Tap Settings
Tap About Phone
The software version will be listed under the Baseband version heading and will be in the format of S:M900.X.XX.XXXX

Via Sprint Samsung Moment official page