I just read that as it's not going ahead as scheduled.
The date to be confirmed seems likely to just be an official announcement of cancellation... but it might be that EIHL are committed to paying for the venue on some level (eg. No Refunds - but some flexibility on scheduling?) and are looking for a way limit the financial damage.
The league, the arena, their various insurance companies, and likely national sports authorities are busy working through all the potential get out clauses and potential ramifications.
The impact on the arena will be far bigger than POFW. They could potentially lose their entire schedule for the coming months, so I doubt they are in any position to just hand back the cash.