MGM Mirage put out a press release today updating folks on City Center's progress.
I've heard a lot of chatter from insiders about the project and from all accounts it is coming along quite nicely - MGM Mirage executives are very pleased with their progress. Of course, recent photos show the main hotel is really taking shape.
There's also news on some budget changes to the project - nothing significant and entirely expected for a development in this stage and of this scope. MGM Mirage is also putting pressure on sub-contractors to reduce some project costs and budgets and without that, the price would have gone up more than they are indicating here.