UPDATE:
The RevManagement and Airline Inventory gods have smiled upon me! I set an alert on Expert Flyer to alert me the moment Business - Saver Award & Upgrade (D) inventory opened up for 2 or more people, and this morning at T - 60 days until departure apparently the inventory was made available! I was able to call and get us re-ticketed into the new cabin of service with no problem!
Apparently T-60 days (for that leg of the trip) was the magic spot on the time line for fresh business class inventory to open up!