I hear that people saw a new QAF preview this weekend. Does anyone know if it's available online anywhere?

I had a freakin' DREAM about watching the 5th season premiere last night - I'm definitely getting antsy!

Question for my fellow QAF Fans: If I pre-order the Season 4 DVDs from Amazon, will they be mailed on April 5th, or will I receive them by April 5th?

Thanks in advance! :)