Ok so I still this McAllister is RJ, see my theory here
http://www.whoisredjohn.com/See-a-theory-Red-John/11950
but the voice in the video does not sound like McAllister.
I think it sounds like Dr. Linus Wagner from the pilot.
Listen to his voice from S3 at 19:00
http://www.videoweed.es/file/6142a7729bcb8
Also his hairline and facial profile match the man in the promo
http://imgur.com/WghA6UQ
A lot of people were asking about that odd scene from tonight's episode where Jane kneels and clutches his leg. I think I figured it out. Jane is hiding a gun. If you watch this promo you see Jane swinging his arm in the church with a gun from a source that is near his leg:
http://www.youtube.com/watch?v=FTsrsFm5VB8
And... I didn't want RJ to be McAllister, but I think it is. Bertram is too obvious, Jane said his name in the press conference to distract people. I wants to kill RJ for himself. Plus when Bertram killed the bartender I knew that the killing was too careless to be RJ.
Now, when Bertram turned up at the storage place they referred to him as Thomas.
Also, the pigeon theory rampant throughout this season and the end of last season.
http://tinypic.com/view.php?pic=r26m87&s=5#.UonFjMTryDA
Wiliam Blake mentions pigeons (doves) in a poem called 'The Land of the Dreams'
Among the Lambs, clothed in white
She walk’d with her Thomas in sweet delight
I wept for joy like a dove I mourn
O when shall I again return
....Thomas.