In a blog posting that went up last night, Valve started to detail some of the changes and thoughts they have in mind for the Negev in Counter-Strike: Global Offensive. Some of these changes are already being tested as part of a beta update for CS:GO but they say that the changes, barring any issues, will go live soon. Their main focus right now is making the Negev a weapon that can provide adequate suppression in the heat of a battle.
At this point it’s clear that the upside of the weapon isn’t enough to compensate for its downsides, so we’re making additional adjustments. The goal hasn’t changed, but the implementation is a little different.

First, the good news: the Negev is now a little cheaper, a burst of several bullets is now more useful (at short and medium range, at least), and the “beam” starts a little sooner.

The bad news: the Negev now has lower armor penetration (no longer lethal to a helmet) and movement speed has been cut in half while firing; no more moving turrets.

The current beta changelog can be found below. This beta just went live last night.
• Adjustments to the Negev:
- Improved accuracy while firing in bursts
- Slightly reduced time until significant accuracy recovery
- Price lowered to $1700
- Reduced armor penetration
- Movement speed is significantly reduced while firing

• Fixed a bug related to Workshop collections when a map was deleted from the Workshop.