Huh?!?

Soprano's finale.

Huh?

What was that all about?

UPDATE:
Well after much discussion over the last week most have come to the conclusion that Tony got whacked at the very end and thats why it just went black.
David Chase has played it coy all week so it seems that we are left to our own devices to decide whether T actually got his in the end or if there was some other explaination. Given the level of forshadowing all season it seems to make sense that he would pull the plug in such a way that there could be no sequel as a "Sopranos" without Tony is nearly impossible to imagine.