Note that it is a very new cab (only a couple of weeks old) supplied under BDUK
The newer cabs and those lines which have had a reset/migration are the last to be done. Since mid Jun its been implied that those 'catchups' will be done after all the other Mk1->Mk2 conversions have been done. It was estimated that these would take a couple of weeks and eta for completion was mid to late July. The last updates were in this post
here, although it was in the main thread that I hinted eta for full completion was late July.
We're currently seeing those final lines being upgraded and so there cant be many more to do now.
Trying to make some sort of order out of no actual conclusive data, it appears that they may be doing the catchups in chronological order, so the fact that your cab is so very new means that it may be one of the last to get it put on. There are still lines being updated every day, there were a couple more done today on MDWS funny enough at about tea-time. I think there's only about 3 more on MDWS left to be done now.