What are we to expect this pre-halving season...?
What have you seen already? Halving is just some weeks to come.
Will bitcoin pump more than $80K to make a new ATH before halving.
No one knows but it is highly likely that bitcoin may increase above $80000 before halving. In just a day, bitcoin can dump $10000 or can add $10000 to its price. So at $71500, it is possible that bitcoin can get to $80000 at any time soon.
Will bitcoin drop to $42K as speculated by JP Morgan..?
I do not know about JP Morgan speculation or his analyst. But if it is true that they said bitcoin is going below $50000, you can see how wrong it is.
Blackrock holding more bitcoin will it not influence bitcoin pumping if we say bitcoin is affected by supply and Demand...?
As people buy more bitcoin than selling, the price will increase. If Blackrock continues to buy, expect increase.