Well, I wasn't able to follow the coverage during the day, but it looks like Sony won out big time over Microsoft and the Xbox One. The only real downside that I've heard is that you have to pay $5 a month for PS+ if you want to play online, but with the 360 having done that for the past couple years, it isn't that big of a concern to me.
And while I was already leaning towards getting the PS4, it easily sounds like the better system, and starting $100 cheaper is a huge plus in my book. I still can't see myself getting it at launch (I'll wait to see the public's opinion on it before I jump in), but it would take something huge for me to want to jump ship to the Xbox at this point.
I'm also interested in what Nintendo has to offer in their presentations. I've been on the fence about hearing any X/Y info, since I'd like to avoid spoilers as much as humanly possible, but just logging onto PC everyday makes it hard to stay away, so I might just end up tuning in. And while I don't really care about the Wii U, I'd love to hear what they have in store for the 3DS over the next couple of months.