I think the blogger has got his facts slightly incorrect.

What I was told last night was that Symbian would no longer be used for N-Series devices between now and 2012 - not that Symbian would be dropped by 2012 as the blogger has posted.

The blogger gives the impression there is no future for Symbian after 2012 but I don't think that's the case at all, which is that between now and 2012 Symbian will be relegated to phones where multitasking, multimedia and eye candy are not essential. I believe that when Symbian^4 is ready (funnily enough, around about 2012) then Symbian will be reconsidered for N-Series devices, possibly displacing Maemo (assuming they aren't merged somehow).

Unfortunately the tech sites are now picking up on the bloggers misinfo.