Beta 86
Summary of changes (For more details and notes, see the full changelog (TAT-v2.0-Beta-Changelog.txt) included in the release):

The new TADR release is included in this beta, which includes the +autoteam command, metal extractor and wreckage "snap" functionality, etc. This includes a new totala.exe and .dlls to allow for the new functionality. For details, see tdraw.txt.

Depthcharges now continue to track targets outside their range, like missiles, making it harder for subs (Or other units) to outrun them.

Doubled the metal "weight" for being carried in multi-unit air transports (Arm Condor and Core Vindicator) for Arm Lemmings and Invaders and Core Roaches and Skuttles, so you can only carry half as many (10 Lemmings instead of 20, etc.).

Arm Gremlin mincloakdistance increased to 50 (25).
NOTE: This makes them easier to decloak, since it was really difficult before. Now a unit that comes within about a Gremlin's width of the Gremlin should decloak it.

Tripled the energy costs for the Arm Epoch and Core Black Hydra.
NOTE: Previously, Epochs and Black Hydras had the same energy to metal ratio as the Millenium and Warlord, despite the former being Gantry-level ships. Now their energy cost is tripled like other Gantry units.

Core Cauterizer attack run length and turnrate reduced.
NOTE: This should help "chain-bombing" to be less abuseable with the Cauterizer, especially while trying to change directions during it.

Arm Hermes cost reduced, armor increased, and firepower reduced to 1/2. They now use the Arm Chainsaw weapon.

Minelayer vehicles, Kbots, and ships now take 20% normal damage from mines (5% normal damage).

Arm and Core Nexus speed reduced to 1.2 (1.3).
NOTE: This gives them the same speed as Commanders.

Core Tidal Generator footprint changed to 3x3 (4x4), so they take up as little space as an Arm Tidal Generator.