There hasn't been, actually. There has been essentially minimal judicial interpretation of this specific provision. Really this case has not been extensively considered, in any judgment, so far. It simply may be too early. Some of these complex investigations involving such techniques take years to complete, and further court proceedings sometimes take years to proceed.
Has there been specific judicial interpretation of that term, enlargement of it, or consideration? No, we're not aware of it.
The terms used there, however, independently, aside from section 25.1, are matters of judicial interpretation, such as what constitutes intentional causing of death or bodily harm. Quite outside this context there are judicial interpretations, because those are referred to in other offence provisions in the act. But to answer your question itself, no.