Role: Anti-Frigate Defense
Attack: 167
Speed: 200
Hit Points: 5,000
Cost: 300 RU
Armament:
2 x Ion Cannon Turret (twin)

Description: Stationary Anti-Capital Ship Weapon Platform. Once deployed it cannot be moved again.

Strong vs: Frigates, Capital Ships
Weak vs: Fighters, Corvettes.

Prerequisites: Platform Controller Module, Research Module, and Platform Ion Weapon Research.

A more advanced version of the gun platform, the Ion Beam platform unleashes four high-energy ion beams at any Frigate or Capital Ship within range. Once deployed it cannot be moved again.

"Both races will be able to build a number of stationary weapon platforms." - Dan Irish, Executive Producer

"The sequel actually has many more special units than the original game did, including ... defense platforms. While the vastness of 3D space always makes it hard to lock down territory as your own, the two types of static defenses -- one with guns for use against fighters and one with ion cannons -- make it possible to deter smaller enemy raids." - Sam Parker, GameSpot

These platforms are "single-burn" like probes, in that they can be given a move command, but only once; thereafter, they are immobile. However, if not given a move command, they assume parade formation with and follow whatever ship builds them, so indirectly you can move them all you like, as long as you keep them with the mothership that built them. 

FooF gets credit for identifying this craft as a Weapons Platform. In one of the E3 videos, it can be seen firing two twin-ion turrets.