Yes, we plan to find out again this time. The main reason I want to find out is because I have a ton of girl stuff and if I'm having a boy, I want to be able to give it all to my SIL that is pregnant with twin girls. Also, all of our nursery stuff is pretty girly. I claimed over and over that I wasn't going to decorate it with girly things, but that's what ended up happening.
I kind of wish we'd waited until delivery with my first, but oh well.