The Bill James Handbook is out already. It's a sad echo of the old Abstracts that he published back in the 1980s, as he seems unable or uninterested in the long essay/analysis format that he once used. I've always presumed that he is either contractually required by the Red Sox not to publish that kind of analysis any more, or just doesn't have the time. (He does publish a volume called the Gold Mine which does have some writing in it, but it tends to be very offbeat oddball stuff rather than core "what makes a player good/a team win" analysis.
In any event, one interesting thing in the annual are statistics related to park effect. These are much more detailed than those that are available, for example, on espn.com One thing they demonstrate is that Mays Field is a very neutral park--not the pitching park that the media make it out to be. It is one percent above the norm in runs scored in 2008-10. And, as you might expect, it is a good place to hit triples and a bad place for a left-handed hitter to hit home runs. (Slightly above average for a RHB.)
The one thing that jumped out and surprised me, though, was that Mays Field is one of the toughest infields to play. It produced infield errors at 29% over the norm of the league, and produced more than any other ballpark in the National League. All of these figures, by the way, use the stats compiled by the opposing teams who visited our yard to normalize--so that the fact that the Giants might have better than average pitchers or fielders or whatever doesn't matter.
Theories as to why your yard plays this way? I don't have a clue.