A press release on AnonNews says that though the group's campaign against Sony will continue in some form, "Anonymous is not attacking the PSN at this time." The group, according to the announcement, is suspending that effort "until a method is found that will not severely impact Sony customers."
Even though whoever wrote this might feel that way, of course, there could still be hundreds of thousands of people out there who feel differently and continue attacking PSN. There's no way of knowing how "official" this announcement is, or even how many Anons were into hacking PSN in the first place. The group is, well, anonymous.