After offering massive bonus points like the 100k Chase British Airways card and the 50% bonus when converting from Membership Rewards, British Airways has changed their award redemption program. The Points Guy has analyzed the changes here.
Changes include decreased miles required for certain awards on BA airlines, but the taxes and fees associated with them are enormous. Previously the best way to use BA miles was to get award travel on their partner airlines such as AA, which would allow you to use your BA miles while paying low AA taxes and fees.
They have yet to release the new Partner Redemption charts, but a spokesperson for the company has announced that they will in November.