Mentioned in the timeline gaffes thread -

so I screen capped it --

To the left of the tardis - but look at it horizontally...

http://i39.tinypic.com/hskgnt.jpg

oh yeah.... It does look like it

I can't see it

You're alright, I can't either

are you blind!? Look at it sideways!!

Just looks like a lightening strike to me...

It's just coincidence.. they wouldn't put the story arc into the opening titles

Unless you count the Sound of Drums, that is kind of in the theme tune. But of a coincidence too though

Just looks like lightning further down the time vortex to me.