The latest discovery I am aware of dates three lines of humans to between 1.78 and 1.95 million years ago. ["New fossils from Koobi Fora in northern Kenya confirm taxonomic diversity in early Homo", Nature journal of science, published online Aug. 8, 2012].
I go along with this because I am a firm believer in science, and this study represents the latest and best evidence for the age of humans.
My world view is that the good Lord gave us brains to use both subjectively and objectively then pretty much left us on our own. I do not subscribe to any organized religion, preferring to use the heart and brain I was given to think and make decisions for myself.