I left Serebii because of those same reasons. I also don't particularily like how he refuses to give out any information until he has concrete proof of it. I enjoy speculating.
Although as far as rudeness of members goes, Serebii and Pokebeach seem to be pretty close.
On topic:
Quoted from the front page's newest update-
Zekrom's ability is named "Teravoltage," not "Terra Voltage." "Tera" is a prefix that means one trillion, which I guess means it can generate a great deal of electricity with its tail generator (a trillion volts?).
There is a new indicator that shows you the status of the weather, such as if it's raining.
Zoroark knows a new attack called "Night Burst," which lowers the opponent's accuracy. The event Zoroark you obtain will know Fury Swipes, Faint Attack, and Scary Face as well.
The confirmation of this, and that it was already thought to be mentioned in CoroCoro might lend a little more credibility to martijn's story. (the items brining about weather changes, you would need a way to keep track of which weather is in effect.)