A Better Oakland had a discussion last week on the City of Oakland logo. Apparently the new one (bottom) has replaced the old one (top). But in looking more closely this week, I've noticed the old one still in use on some city vehicles. I'm not sure whether this reflects a slower change over, or simply the use of multiple logos.
I agree with V Smoothe, the new logo is lame. Someone in the discussion said it looked like the logo for a golf course in Danville, which I think is about right. It also could be any number of other Oaklands throughout the country. The old logo was bold and distinctive, things you want in a logo, and it represented Oakland well.