Dave Meltzer reported in the latest issue of the Wrestling Observer Newsletter that WWE is planning more Raw and SmackDown TV events in the same building next year. The first is in Phoenix in February.
The idea within the sports entertainment company is to save on the production end, because you only have to set up once instead of twice, and it cuts down on travel and is easier for all involved in production. It also allows them to package tickets for both events at a bargain price.