Still behind the PS4 but might be slightly ahead of the Wii U.

It will increase the weekly sales baseline by 10%.

Should pull it ahead of the WiiU at least.

Sorry mate. But nothing will change despite minor boost. PS4 has established itself as the premier console. Xbox 360 kept outselling PS3 even the times of the last of us. Now this will happen with Xbox One.

Will provide a respectable boost. But not anything incredible.
Wont catch up to PS4.
Possibly catch up to Wii U.

A short boost by September and some decent numbers by the holidays. That's it.

Only will give it a short boost, imo.

Toastboy will make a thread and people will bump it later.

XB1 will pass Wii U sales again. I think it probably already has because MS is pre-selling a lot of bundles, and Wii U sales seem to be dropping.  While sales are dropping we haven't found a baseline.

Nothing is going to happen.

Because...

a) PS4

b) tradition of not buying Xbox (Japan)

c) countries with no significance for console market