I don't think this was posted yet..
Waypoint actually posted the what the TU did:
"The next time you log into Halo 4, you will be prompted to download a title update. This particular title update tackles actual game and gameplay issues, not sandbox tweaks and balances. We have another TU in the works and will continue working on the timing and content of the next one. For now, here is a change list of what was included in today's title update.
Implemented general stability improvements
Fixed glitch where quickly reloading after firing the Boltshot resulted in an instant reload
Fixed glitch where sprinting prior to activating the Hardlight Shield allowed players to move faster
Fixed glitch were players could throw a grenade and then immediately sprint afterwards to perform a high velocity grenade
Fixed glitch where Mantis could fire more rockets without reloading if the machine gun was fired partway through unleashing the charged missile barrage
Fixed issue where DLC was unavailable for other profiles on the same console
Fixed issue where DLC disappeared after console reboot
Fixed issue where players could not unlock Campaign completion achievements when using a rally point other than Alpha for any mission to finish the Campaign
Fixed issue where players were not given credit for completion of a Spartan Ops Episode Difficulty Challenge when completing it through Matchmaking
Fixed issue where players with 99 or more Xbox LIVE friends could not get File recommendations
Fixed issue where loadout configurations were lost if the game was booted and then powered off before passing the Press START screen
Fixed issue where attempting to upload large films to the File Share under poor network conditions caused the upload to fail
Improved time to load variants with separate profiles
Fixed issue where moving a profile from one controller port to another after relaunching the game reset loadout settings
Improved consistency of random ordnance navigation marker display
Fixed performance issues when launching Halo Waypoint from Halo 4
We will update everyone when we have more information about the next Halo 4 TU. If you'd like to read more about this TU or the upcoming Matchmaking playlist update, please check out the 12.06 edition of the Halo Bulletin."