CCTK-2.2.1 added support for several new BIOS tokens, including PCI MMIO Size, Dell Wyse P25, Intel Platform Trust Technology, Deep Sleep Control, and Dell Reliable Memory Technology. These new tokens allow configuration of features like allocating PCI memory, enabling remote BIOS access via Dell Wyse P25, controlling Intel PTT device visibility, defining deep sleep behavior, and enabling memory error correction. The new tokens can be configured using CCTK commands like --pcimmiosize and --drmt.