Apple today seeded the fourth beta of an upcoming macOS Sierra 10.12.4 update to developers. Their latest build is 16E175b.
The first thing I spotted was that two of the three new plists, added in Build 16E144f for Kaby Lake processors, will be removed by an installation script:
./S*/L*/Extensions/IOPlatformPluginFamily.kext/C*/P*/X86PlatformPlugin.kext/C*/R*/Mac-CAD6701F7CEA0921.plist
./S*/L*/Extensions/IOPlatformPluginFamily.kext/C*/P*/X86PlatformPlugin.kext/C*/R*/Mac-B4831CEBD52A0C4C.plist
Source: Tools/cleanListSUConstructed (paths shortened).
The third one is still there:
Mac-551B86E5744E2388.plist
Another thing is that /S*/L*/Extensions/eficheck.kext is being removed. Along with all the whitelists at: /usr/libexec/firmwarecheckers/eficheck/whitelists/
The NVRAM variable SkipBluetoothAutomaticFirmwareUpdate is now also removed.
Looks like Apple is preparing for a release…
Pike's Universum 
Seems to bring new firmware along for the 2010 MacBook (7,1) – MB71.0039.B10 is flashed atop the previous MB71.0039.B0E (which Apple still mentions as the latest for this model).
Other models updated as well?
Yes. Almost all supported SMBios info were updated in this seed. I extracted some of them. Check ( http://www.insanelymac.com/forum/topic/284656-clover-general-discussion/?p=2375564 ) for more details.
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