Treyarch have announced that the latest patch for Call of Duty Black Ops contains the following fixes:

IN PROGRESS
Title Update 4 is nearing the end of Phase 2 testing. Going into Phase 3 submissions on 12/6.
Patching process: Call of Duty: Black Ops

Issues Addressed:

• Resolved several issues with parties getting disbanded unexpectedly.
• Updated handling for UPnP-enabled routers to improve matchmaking conditions where users had strict or moderate NAT types. Also added in-game communications so that all players are aware of their NAT type in the Player Match party lobby.
• Addressed issue that prevented the “Load MP by Default” option from saving when other specific option combinations were set.
• Prevention of exploit that allowed players to keep custom classes and killstreaks after prestige.
• Addressed an issue where Flak Jacket Pro would not always protect against ground fires left by Napalm Strikes.
• Prevention of users losing their killstreak reward when switching classes at the start of a new round in round-based game modes.
• Addressed an issue where the incorrect perks would appear when spectating another player under certain circumstances.
• Added round start explosive delay to China Lake grenade launcher to give it the same round start limitations as other explosives.
• Contracts will now reset when the player Prestiges.
• Prevention of Valkyrie rocket exploding upon release under rare conditions.
• Prevention of Gunship failing to give player full control under rare conditions.
• Prevention of an issue where a player will get teleported outside the map boundaries under very specific circumstances.
• Additional security measures to enhance detection and banning capabilities.
  
  Gameplay Tuning:
• Limit the ability to re-roll supply drops using Hardline Pro to Care Packages only, no other killstreak drops.
• Added a negative influencer to all spawn points to decrease the chances of spawning near an enemy. This will further improve spawning protection on top of previous updates.
• Additional sound mix tuning for Ninja Pro users – increased ranges and volume of enemy footsteps, and removed player footstep sounds on concrete material types.
• Increased headshot multipliers for sniper rifles. Sniper rifles with suppressors equipped will now always be ensured one-shot kill headshots.
• Subtle increase in sniper rifle accuracy when scoping in.
• Added a render delay to the red diamond player indicators that appear when controlling the Gunship, Valkyrie Rocket and Chopper Gunner. When a player first spawns, this will not appear for a period of time.
• Additional minor reductions in knife lunge.

I read in a Treyarch forum that they're adjusting the sniping accuracy delay when scoping in from 2 seconds to 0.25

Meh very useless.

Whey! they are sorting the spawns outs. Only really have trouble with them on Nuke Town and Launch, but its frustrating when you die 3 times in a row seconds after spawning.

Just going on their "patching process" I would say within the next 2 weeks (3 max) as they will want to get it out before Xmas.