If anybody is interested, the SCPI command changes between version 01_03_00_01 and 01_03_00_03 are as follows:
diff 01_03_00_01.txt 01_03_00_03.txt
637a638,643
> CALibration:INIT:ADC:DATa selfcal 72 -1 ('INTEGER',) ()
> CALibration:INIT:ADC:DATa? selfcal 72 -1 () ('INTEGER',)
> CALibration:INIT:ADC:TCMP selfcal 71 -1 ('INTEGER',) ()
> CALibration:INIT:ADC:TCMP? selfcal 71 -1 () ('INTEGER',)
> CALibration:INIT:ADC:TDMX selfcal 70 -1 ('INTEGER',) ()
> CALibration:INIT:ADC:TDMX? selfcal 70 -1 () ('INTEGER',)
652c658
< CALibration:SAVE selfcal 2 -1 (['CHDelay', 'DDELay', 'GGND', 'MLF', 'PRECision'],) ()
---
> CALibration:SAVE selfcal 2 -1 (['CHDelay', 'DDELay', 'GGND', 'MLF', 'PRECision', 'SER'],) ()
1748a1755,1762
> SYSTem:KEEP:ACQuire utility 12093 -1 (['AVERages', 'HRESolution', 'NORMal', 'PEAK'],) ()
> SYSTem:KEEP:ACQuire? utility 12093 -1 () (['AVER', 'HRES', 'NORM', 'PEAK'],)
> SYSTem:KEEP:AVERages utility 12092 -1 ('INTEGER',) ()
> SYSTem:KEEP:AVERages? utility 12092 -1 () ('INTEGER',)
> SYSTem:KEEP:BWLimit utility 12091 -1 (['100M', '10G', '150M', '1G', '200M', '20G', '20M', '250M', '25M', '2G', '300M', '350M', '4G', '500M', '50M', '5G', '600M', '70M', 'OFF'],) ()
> SYSTem:KEEP:BWLimit? utility 12091 -1 () (['100M', '10G', '150M', '1G', '200M', '20G', '20M', '250M', '25M', '2G', '300M', '350M', '4G', '500M', '50M', '5G', '600M', '70M', 'OFF'],)
> SYSTem:KEEP:IMPedance utility 12090 -1 ('BOOL',) ()
> SYSTem:KEEP:IMPedance? utility 12090 -1 () ('BOOL',)
1752,1753d1765
< SYSTem:KIMPedance utility 12090 -1 ('BOOL',) ()
< SYSTem:KIMPedance? utility 12090 -1 () ('BOOL',)
So mostly new commands related to calibration, and new SYSTem:KEEP commands. Maybe related to saving the current setup?