I have previously heard of Shiloh possibly being the site of the Millenium Temple since it was the site of the Tabernacle where the Israelites assembled.  Please read Joshua 18:1 and Judges 18:31.  However, this is the first time that I have heard that "the correct site for Israel's next Temple is between Bethel and Hai."  This article at the following link gives the reasons why.
http://www.rense.com/general65/thresh.htm