The last time I was in 770 was a little under ten years ago. I was asked by a friend who had been invited and did not want to go alone. The couple who had invited her believed firmly that the Rebbe was concealed rather than deceased and that he would shortly reveal himself as moshiach. It appeared to me at that time that the feeling was prevelant in 770, though I might have only been introduced to the few among the crowd that shared the host's viewpoint.

There was a bracha added to the Amida recited in 770 that I was told referred to the Rebbe's position as moshiach. The wording was also on a huge banner which was on the wall. It's been so long I can't remember what it was. (I know that it wasn't the "B'ruch ha bah hamelech hamoshiach" sign that was posted in the streets) Have these been changed?