Just saw on Reddit the first weapon balancing update:
submitted27 minutes ago * by davidvonderhaar
I've said this before, but in case you missed it, when it comes to hotfixes (aka: Game Settings Have Changed) we won't be issuing full patch notes.
They happen so frequently and will get rolled up into a proper patch/title update in a future update. When that happens, we will give out more details via official social media channels like @Treyarch's Facebook and/or Twitter.
I also understand that people expect to know what has changed. This is especially true for weapon tuning. Part of the fun of video games is discovery and experimentation. This is especially in a "Create a Class" and Pick 10 world.
Most of these edits were very small and range from clip sizes, to damage range, to ADS time in/out adjustments, modifications to Quickdraw Bonus(es) for LMGs, recoil reductions.
The general philosophy is to tune in small increments either up or down, until we have a really healthy set of data and player opinion to work from.
Don't think it will affect too much currently though.