[...]I'm curious what has changed with the doctrines for Ostheer.
[...]
in the latest replays it was like this, but may have changed already

Army Fortress Troops:
left
- 2CP: Improved Fortifications (Pioniers can build Panzernests and Foxholes)
- 2 CP: Ambush Tactics (Infantry cloak in cover, gain first strike bonus, slow recloak after attacking)
- 4 CP: leFH 18 (stationary 105mm Howitzer)
right
- 2 CP: Counter Attack (in friendly sectors: +speed, - received accuracy; in enemy sectors: small + damage)
- 1 CP: Field Hospital (upgrade to collect wounded, each 4 wounded give a manpower bonus)
- 5 CP: Elefant (Precesion Shot: locks tank, can't move, can't turn, gives some bonus ?; can be called again if lost)
Army Support Troops:
left
- 1 CP: Storch recon plane
- 3 CP: Brandenburgers (airdropped; build:?, ?, "false radio" to disrupt enemy production ; abilities: follow unit, demo charge, "annection" instantly cap a neutral sector)
- 3 CP: aces high (sdk 263 can call in dive bombers)
right
- 2 CP: paradrop fuel, munitions and heavy weapons
- 2 CP: confederation support (opel blitz can call in supply drops -> a JU52 will drop supplies depending on the sector where it's called in)
- 3CP: confederate mechanised support (call in foreign battlegroup with some infantry and tanks), e.g. 3 tanks and 1 "alpinis" infantry (upgrade: MP40, ability: ?)