Here is my theory. (It is just theory because I have NO INSIDE knowledge)
1. It is bomb or missile? Not sure, but whatever it is, it is smart means it can identify target and able to adjust flight path accordingly.
2. Blast and shockwave are very intense and horizontal in dispersion. Means it is a weapon for creating shock and awe in the battlefield.
3. Post blast frame in video. Did anyone notice something unusual? Why there are so many tires lying around and that too in a very peculiar manner (in straight Lines). Now I think, tire is something which is hard enough not to be vaporized due to that massive explosion and soft enough to show the impact of "Heat" caused by blast. Hence, giving a pretty accurate assessment of damage to the designer of the weapons to study the impact and improve. (Otherwise I cannot think of any other reason why tires were put there). This also support to my earlier point about this being a shock-and-awe weapon system.
4. If you concentrate on video, the blast has extended timing as if some kind of fuel inside is kept burning even after the first blast and massive shockwave. (again a battlefield weapon)
5. Indian Cold Start idea is based on smaller (Div sized) integrated battle groups (IBGs) making rapid incursion into mainland Pakistan, now consider that scenario and Pak replying by using this weapon.
All the counter arguments are welcomed