I was in that class (Oct 2010 hire) and I paid for my hotel the month I was in training at MSP. I didn't like it, but that's the cost of doing business. Delta did cover my hotel during indoc, however, and my take-home pay was $2300/month until I finished training and started IOE.

At the time, my wife and I thought it came across as a little 'cheap' for such a large, respected company to skimp on the hotel and per diem during training (and yes, I'm new to the airline industry).