Not sure either. It doesn't seem to show on the general Chase or United sites yet. I think we have an inside tip...

And they apparently need some editing help (italics mine - seems to be poorly worded IMHO):

"Earn 25,000 bonus miles after first use and 5,000 additional bonus miles after your first Card use and for adding an authorized user within two months of opening your account. Plus, earn 10,000 bonus miles when you spend $25,000 or more on your Card each calendar year."

Looks like there is a business offering as well:

http://www4.chasecreditcards.com/MPBusiness35kAFW.aspx

"Earn up to 35,000 bonus miles*
Earn 25,000 bonus miles after your first Card use. Plus, earn 10,000 bonus miles when you spend $25,000 on your Card each calendar year."