Trivially false: FiveThirtyEight lists four general-election polls by three groups that were released on the 22nd or 23rd.
That said, it's uncommon for poll results to be released on a weekend. In comparison to the four on the weekend, FiveThirtyEight lists ten nationwide poll results by four groups and fifteen single-state polls by six groups that were released on either Friday the 21st or Monday the 24th.