Nothing special, but full floor plans are up now (only West Hall was shown in the PDF Sony supplied):
http://www.mapyourshow.com/shows/index.cfm?Show_ID=E312
In case you haven't seen it, Nintendo's booth (4822) is located in West Hall. Microsoft (4100) and Sony (4522) are there as well, it appears changes have been made as they now only have one booth each instead of two (as reported on the PDF dated March). So, no Durango or Orbis, then? Nah, amount of booths/booth size shouldn't reflect what a company intends to show.
Activision, Capcom, Electronic Arts, Sega, Square Enix and Ubisoft, to name a few exhibitors, reside in South Hall.
Following the addition of the floor plans, we should begin to see a rather steady addition of exhibitors under the Wii U product categories. Capcom used to be on the list, so perhaps they will be readded.