I don’t know.  How long are you thinking?

A while. State issues to consider, too. Choosing between waiting and perhaps extending or filing without claiming the exempt income and amending if needed later.. Maybe the IRS will have a way to automatically credit the returns for amounts not claimed on the return. 

You can do it yourself now for the federal, but that still leaves your state up in the air:

New Exclusion of up to $10,200 of Unemployment Compensation | Internal Revenue Service (irs.gov)