Beta 83
Summary of changes (For more details and notes, see the full changelog (TAT-v2.0-Beta-Changelog.txt) included in the release):

Added a new unit, the Nexus, to the Arm and Core Kbot Labs. The Nexus is a Kbot Transport, able to hold up to 6 units with a 3x3 footprint or smaller. It has firing ports, meaning units inside can fire outside while remaining protected inside the transport.

Added two T3 construction units:
Arm Experimental Construction Vehicle
Core Experimental Construction Vehicle

These are both built from the Experimental Gantries and have triple the build power of an advanced construction vehicle (About 4.5x the construction power of a Commander or a nanolathe turret).

The following structures have been removed from the build menus of advanced construction units and are now only buildable by the Experimental Construction Vehicles:
Advanced Fusions
Deep Core Moho Mine
Hyper Radar
Vulcan/Buzzsaw

Arm Bear and Core Turtle no longer have firing ports and can now carry 16 units instead of 6.

Increased turning rate and flight time for vertically launched rockets to prevent them from running out of fuel when attacking targets to the south of them at maximum range.

Reduced Shodan line of sight and range.

Increased Arm and Core Advanced Solar Collector armor.

Reduced Arm and Core Moho Geothermal Powerplant energy production to 1400 (2500).