F9 is still receiving acft with a few delayed and added to next year. The large order so far remains unchanged. Frontier is receiving 130 or so of the large order.
Just like the others the focus is on conserving cash. Indigo was however in round 2 of bidding to purchase Virgin Australia up until around June of this year. That was more than a few months into the Covid nightmare so they were apparently able to financially support another airline.