Bit of a bump here. The television set in my possession (Samsung J6300) has a built-in DVB-T2 tuner and is picking up digital broadcasts (Rosebank, Cape Town). Only got the thing a week ago, so no idea when the digital broadcast actually started.
Limited observations to date:
There's a plethora of radio stations -- all seems to be the national, SABC ones (R2000, Metro, 5FM etc.)
Five SABC channels are present: SABC HD (no idea what the programming is, and frankly not interested enough to find out), SABC News, and good old SABC 1,2,3.
etv is conspicuous by its absence.
I ran auto-tuning on the TV before GOtv started up, no idea if it's capable of picking those signals up. Not expecting the TV to be able to though; guessing that the GOtv broadcast is encrypted and would require their decoder no matter what.
While digital broadcasting allows some extra features to be broadcast (e.g. TV guides as per what DSTV has), only some of the radio stations support this.
This presumably means that TVs with a built-in DVB-T2 tuner can forgo the STB requirement.
There's nothing in the list that I personally am interested in listening to or watching, but I find this interesting nonetheless. Looks like some progress is being made, through nowhere near fast enough.