I think the weekly sales will stay the same it might go up but not down.
But if sony has a press conference about the ps4 sales might go down

no, it will continue to drop until some games release, then it might have a slight increase

Sales will take off! Renowned scientists hired by Reggie are doing secret experiments to motivate American Wii U gamers by DENYING them games! Here's a top secret video leaked from Ninty's secret lab in Area 51:

if you look at other consoles sales in the same period after their launch I think the wii U can break the magic mark of sub 25k at least one week before E3

What are you basing this on?

Nothing, just pure thoughts :D

Haha, premonition? Your spider sense is tinkling?

I wasn´t so wrong after all. I hope the sales keep going up

Just prior to PS4 hype? Not likely.

If that's not an increase, I don't know what is. I expect it to stay about the same this week, regardless of any impending PS4 announcements. It certainly seems to be moving more and generating more buzz in my local stores since they switched the demo from Rayman to Mario, anyway.