I think Arsenal are almost definitely going to finish top 4, and that the top 4 is settled now, the only questions being:
Who will finish 1st, Man C or Liverpool?
And who will finish 3rd, Chelsea or Arsenal?
I also think 5th to 8th is settled, and Man U I think will remain somewhere in that next group of 4, including West Ham, Wolves and Spurs. But who knows what order.
Below 8th, the table gets more congested.
This could have happened and indeed they are now quite good in terms of performance, one point ahead of United with a difference of 2 matches postponed is currently very good for Arsenal.
Even for Position 3, I think Chelsea will still be comfortable because even though Arsenal are still quite good, the rest of the matches for Chelsea can now be said to be quite profitable because they will play a relatively easy team and there are only MU and Westham who can be a stumbling block.
As for Positions 1 and 2, it's still quite difficult for me to see them but this can be confirmed when City and Liverpool play later I think