Stopped by Petco Park for a tour while I was in town about a month ago. They do a good job and I recommend it if you're there and there isn't a game. Buy tickets in advance, our tour sold out.
For followers of former Sox, there was a sweet Will Middlebrooks camo jersey on display in the team shop.
He may be happy too, as they're moving the LF fence in several feet this year. This follows a move of the RF fence previously.
Here's a photo of the construction:
They also installed a large video board, which I think will be one of the bigger ones in the league. It is an interesting juxtaposition next to the Western Metal Supply building.