Juicy Tidbits about HBP?

[lorelei3dg]

No: HPFGUIDX 125255


I just noticed the following over at Mugglenet:

"A MuggleNet reader who is the librarian at her daughter's school 
today received a copy of the 'Publishers Quality Library Service' 
catalog. She said there is an ad in it for pre-ordering copies of 
Book 6 that says: 'With something huge revealed about Lily Potter, 
the truth about why Dumbledore trusts Snape, and a little romance for 
Harry, this promises to be one of his best years at Hogwarts yet.' "

My first thought was of trepidation regarding Lily's revelation, but 
then the last bit about it being a great year for Harry leads me to 
think the information must be positive. So anyway, what do you all 
think this information may be?