You may have heard about the late Rabbi Yitzhak Kaduri, who died in 2006 at age 113 or more, Just google his name and you will find all kinds of information.
Before he died, he claims to have had a personal encounter with the Messiah. To the shock of many, he reportedly revealed the actual name of Messiah (Yeshua, Jesus), although some hard core Jews dispute that, as would be expected, because such would be antithetical to modern Judaism.
It is also reported that he revealed the month and year that Jesus will return. He wrote that he had asked Yeshua when he was going to return, and Jesus told him the year and the month, but not the day. He reportedly told Rabbi Kaduri that he will return in the month of Av in the Jewish year 5772 (this year). The month of Av will begin on July 19-20 of 2012 and will end on August 18.
There is much about the rabbi that is controversial, such as did he meet the real Messiah or a fake, Some of his theology is in serious error, such as his Kabbalah involvement. I do not know the answer, so judge for yourself.
However, to me what makes the story very relevant, indeed compelling, is that some very astute Bible prophecy students have independently concluded that the rapture will probably occur sometime in July or August 2012. Interestingly, their timing fits what the late rabbi reportedly said.
Here is one of the Web sites reporting on the late rabbi: http://www.fivedoves.com/letters/june2012/stevenk621.htm