The answer is only Suzuki and Daihatsu (FVDI SVCI V2020 new added software) contain the special functions. But both SVCI 2019 and SVCI 2020 have the new regular software and contain all the old software as well. The hardware is compatible with the older software SVCI V2018 or the version of FVDI2, the older software has special functions, then if SVCI V2020 & SVCI V2019 run the old software, it will have special functions.
Test SVCI 2020 VAG & Mercedes Special functions:
SVCI V2018 free download
https://mega.nz/#!6CBEmAJY!X2VfBqI3C3GRsq01nn00uaPBkRS53K-_wvppa_7NXYM
Free download SVCI 2020:
SVCI2020_v10.0 .7z
https://mega.nz/#!ff4hTKhY!RppGNKf9mugkzarQdbIIHLNzboeY32Ka5gtaPjQe2Wo
Size: 5.87GB
Password: No need
OS: WIN7 8 10
Contributor: flyobd.com
Full version: 21 Software (adds the software of Jaguar/ Land Rover, Suzuki, Daihatsu compared with SVCI2019)
IMMO: Yes
Diagnostic: Yes
Programming: Yes
Special functions: yes (only with old software SVCI V2018 or the version of FVDI2)
Testable SVCI 2010 hardware:
Free download SVCI 2019:
SVCI2019_v10.0 .7z
https://mega.nz/#!PSxDBawR!mywOR19-BamzlmPWBR4sJXLATBl0vWWGZLyn82FVYNI
Size: 5.83 GB
Password: No need
OS: WIN7 8 10
Contributor: flyobd.com
Full version, 19 Software (add ABRITES Commander for VAG V37.0 / BMW V10.5/ Mercedes V10.4 compared with SVCI 2018)
Diagnostic: confirmed (cover VW/Audi/Skoda/Seat, BMW/Mini, Mercedes Benz/Smart/
MAYBACH up to the 2019 year)
IMMO: confirmed
Programming: confirmed
Special functions: yes (only with old software SVCI V2018 or the version of FVDI2)
Compatible SVCI 2019 hardware:
Source: https://www.obd2shop.co.uk/wholesale/svci-fvdi-v2019-abrites-commander-full-version.html