DICE are slowly releasing information on their patching plans it unknown if Febuary patch is going to have this bundled into it.

The following changes are due to take place.

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DMRs
1) Increased the damage of all DMRs across all ranges. Specifically, damage has been increased at long ranges to allow three-hit kills against unarmored opponents. Additionally, reduced the penalty to accuracy for sustained DMR fire, allowing more rapid follow up shots in combat. The amount of the damage increase varies from weapon to weapon, according to its intended range, rate of fire, and damage. We will continue to monitor the effectiveness of DMRs in combat, and determine if additional action is needed to make DMRs a viable mid to long range weapon.

Pump Action Shotguns
1) Increased the accuracy of pump action shotguns (870 MCS, HAWK 12g, SPAS-12, and UTS 15) while on the move and aiming. The accuracy has been approximately doubled. These weapons did not have any available barrels or grips that would allow a player to enhance their aimed accuracy. This change should make the use of pump action weapons with slugs much more viable at medium and close range by allowing more accurate fire.

Carbines
1) Reduced the long range damage of the MTAR to bring it in line with the rest of the Carbines.

General

1) Adjusted the way inaccuracy is handled when transitioning from Hip fire to Aimed fire. Previously, if a player began firing before aiming, he would keep his hip inaccuracy while aimed, until he stopped firing. This was especially obvious with LMGs on the move. Players will now only be subject to the maximum aimed inaccuracy after the transition. While still terribly inaccurate, this allows for substantially more accurate fire than the old method and should allow players with LMGs to panic fire in close quarters, provided they are aiming.

2) The Heavy Barrel’s Accuracy bonus now also applies on the move, at a reduced bonus. This should give the Heavy Barrel a wider role for players who desire accuracy while aimed in all situations.

3) Synchronized the timing of the aim down the sights animation of sniper rifles with their ability to fire with full accuracy. Players no longer need to wait for additional time after the aiming animation plays to get accurate shots. There is still a delay to achieve full accuracy, so Quick Scoping is still not possible.
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DMRs get a damage boost, and other fixes
Shotguns are given a accurate change pump action shotguns only
MTAR gets a change in damage at range


The Battlefield Blog | Balancing BF4: Upcoming Soldier Weapon Tweaks