According to dpreview.com[nb]Only source I could find, sorry![/nb], Canon will not be attending PMA 2010. ; Instead they will focus their efforts on the CES, which occurs about a month earlier. http://www.dpreview.com/news/0909/09093002pmacanon.asp Which means, IMHO, that the 1DMkIV will be announced in late January. ; Especially since the D3s is expected within the next 4 weeks.