http://slitherine.com/forum/viewtopic.php?f=121&t=26367
Tips on locations of capturable units throughout the DLC and AK Campaigns:
viewtopic.php?f=121&t=39382
Complete Grand Campaign Tree.
http://slitherine.com/forum/viewtopic.php?f=121&t=41972
It's still the same Panzer Corps, but the AI has quite a few devious tricks up its sleeve now, so be prepared!
Just thought I'd share a few helpful hints for anyone curious.

1. Pay close attention to your briefing.
They often contain very specific and useful information about the upcoming scenario.
2. Recon is important.
With abundant enemy counter-attacks, knowing where these attacks are coming from and how strong they are is vital to preparing an adequate defense. Recon units and fighters are your best units for this task.
3. Escort your Stukas.
The AI has a tendency to send its aircraft to attack in waves now. So expect air battles for some scenarios to last the entire length of a scenario, not just a quick 3 turn clearing of the skies at the start of a scenario!
4. Tanks, anti-tank, and tactical bombers.
While there are still plenty of soft targets that must be dealt with, you should be prepared to face off against a lot more enemy armor in the DLC campaigns than you have in the current Panzer Corps campaigns. Some scenarios actually have a 2:1 ratio of enemy infantry to enemy tanks, so build your core accordingly!
5. Victory is *not* life.
If you find yourself struggling, don't be afraid to settle for a minor victory for a scenario or two while you slowly build your core to strength. Decisive victories and minor victories share a similar progression path, so getting minor victories isn't as damaging like it is in the main campaign (cant get to USA without decisive victories). Of course that doesn't mean Decisive Victories aren't worth going for. They reward more prestige, access to 'bonus' scenarios, and a more likely possibility of capturing enemy equipment! Just don't think of a Minor Victory as a loss.

Thanks Rood and Eraser for their original contributions!