From the DVCmember website:
After a thorough analysis of Member travel patterns and Resort demand, Disney Vacation Club will be adjusting the 2021 Vacation Points Chart in order to encourage travel throughout the year with the goal of improving availability.
The 2021 Vacation Points Chart will feature 7 seasons that offer a wide range of options. Travel periods with greater demand will require more Points and travel periods with less demand will require fewer Points. However, those Members with more flexible travel schedules can enjoy stays using fewer Points than the previous year. For example, Members can enjoy stays for fewer Points than the year before when traveling in early September and during the summer period. On the other hand, Members who wish to travel in certain weeks in October and November will require more Points than the year before.
These changes only affect Disney Vacation Club Resorts at Walt Disney World Resort. They do not impact Disney’s Vero Beach Resort, Disney’s Hilton Head Island Resort, The Villas at Disney’s Grand Californian Hotel & Spa and Aulani, Disney Vacation Club Villas.