Foxconn D270S board here (Intel Atom D2700). Realtek 8111e onboard NIC, doesn't work at all in 2.0.1 for me, works great in 2.1. So yup, definitely new Realtek driver that's in 8.3. See here:http://www.freebsd.org/releases/8.3R/relnotes-detailed.html
I just wish 2.1 was actually usable. I know, I know, patience. I just wasn't expecting this and am trying to get this system up for a client (a friendly client running an old machine borrowed from me for now, thankfully). For the most part, what works, works great. Unfortunately, the traffic shaper doesn't work. Snort doesn't work. Etc. The traffic shaper is what I care about, it needs to work before I can even consider setting this up up at the campground it's for. In time, it'll come.
Also, anyone considering an Atom D2700 based board (or presumably D2500) - AVOID LIKE THE PLAGUE. The graphics driver in FreeBSD (even 9.0) is messed up beyond belief. You can get through install with the 32-bit version, though there are missing characters and stuff. The 64-bit version only shows one line of text, so you can't even get through an install
Seriously - it's that bad. I got this board because it was cheap, and it's for a non-profit (I'm semi-donating my time... they'll give me something they're friendly and always do - but I'm not billing them. They also know I use them as a "sandbox" of sorts to try things before I unleash them on my other clients)