Chimera 4.0.0 includes:

Used Chameleon 2.2 r2421 as the code base and incorporated any changes that didn't break Chimera 4.0.1 enhancements
Added Broadwell CPU and IGP support.
Added addition LPC device IDs in spd.c

Files edited:

i386/boot2/options.c
i386/boot2/prompt.c
i386/libsaio/acpi_patcher.c
i386/libsaio/aml_generator.c
i386/libsaio/ati.c
i386/libsaio/ati.h
i386/libsaio/bootargs.h
i386/libsaio/bootstruct.c
i386/libsaio/bootstruct.h
i386/libsaio/console.c
i386/libsaio/device_inject.c
i386/libsaio/device_tree.c
i386/libsaio/device_tree.h
i386/libsaio/disk.c
i386/libsaio/dram_controllers.c
i386/libsaio/efi.h
i386/libsaio/fake_efi.c
i386/libsaio/hda.c
i386/libsaio/load.c
i386/libsaio/md5c.c
i386/libsaio/nvidia.c
i386/libsaio/platform.h
i386/libsaio/saio_internal.h
i386/libsaio/saio_types.h
i386/libsaio/smbios_decode.c
i386/libsaio/smbios_getters.c
i386/libsaio/smbios_getters.h
i386/libsaio/smbios.c
i386/libsaio/smbios.h
i386/libsaio/spd.c
i386/libsaio/stringTable.c
i386/libsaio/sys.c
i386/libsaio/vbe.c

Make.rules Changed to add -Wno-unused-const-variable to CFLAGS