The uncut version has been released, completed with footage from the German theatrical version stored in some facility in Amsterdam.
The three cuts were by the way imposed upon the US version by the League of Catholic Decency who examined Psycho’s US version after the MPAA and prior to the US theatrical release. European theatrical copies seem not to have been affected by these cuts (although some countries had their own censorship imposed). That’s why the German print still had these scenes intact.