I think it's really fair to have the opportunity to listen to the album before its release. If you like it, you'll buy the album. If you don't, you won't.
I definitely think this is the smart way to go these days. If a record is streaming, then I don't have the "download it" to decide. Although, with this album I'm definitely waiting until I get the mp3s emailed at me.
I've been stoked for dayyyys