OoP Summary/Spoiler at TLC?

[Tom Wall]

No: HPFGUIDX 55063

Assuming that discussion of this
teaser is not not allowed by the
HPFGU administrators - 

A lot of the summary seemed 
to live up to what I've been
hoping for from this upcoming
novel, with one interesting
and very unexpected twist:

"A venomous, disgruntled house-elf"

So, do we think that this is meant to be Dobby, Winky, or some new 
house elf that we haven't encountered yet? For now, I'm thinking that 
Winky goes berserk after the events at the end of book 4, and that 
she decides to take some revenge... probably, she might even blame 
Harry and his friends for 'meddling' in her previously pleasant and 
devoted life to the Crouch family. And I'm not dismissing the 
possibility that it could be Dobby, but that would mean that 
something dreadful would have to happen plotwise to make him turn 
against Harry. Oooh. 

Man, I'll tell ya, I can already see the insanity starting to build 
in my fragile little mind. I don't think I've anticipated anything, 
ANYTHING like I'm anticipating this.

-Tom