http://www.templeinstitute.org/gra-churva-holy-temple.htm
“Regarding the Rumor about the Building of the Holy Temple on March 16th, 2010, and the Story that Lies Behind It”
...AS EXCITING AS THIS STORY IS, the true story, from which the current version has taken certain poetic license, is even more exciting...
...HAVING EXAMINED THE HISTORY of the Churva synagogue, and the source of today’s current excitement, it can be stated that heart of the matter is not a prophetic prediction of a precise building-of-the-Temple date...
Hmmm...I notice that the article points out that an effort was made to reconvene the Sanhedrin by some of the Gra's followers in Israel- something that now has been accomplished.
Yes, the Temple will be rebuilt and I believe very soon.
And as far as March 16 being the day- we don't have long to wait to know for sure!