The upgrade standby list has old Continental language - no reference to GS or 1K at all:

http://pss.united.com/web/en-US/cont...andby_FAQ.aspx

How are upgrades prioritized?

Customers standing by for upgrades are prioritized based on several factors, such as paid premium cabin customers versus complimentary Premier upgrades. When not already confirmed in the premium cabin, customers on paid premium cabin tickets are given top upgrade priority.

On flights that are eligible for complimentary Premier upgrades, United MileagePlus® Premier members will be awarded in the following priority:

Premier members with full-fare (Y class) tickets, in Premier tier order
Premier members with full-fare (B class) tickets, in Premier tier order
Premier Platinum members in all other fare classes, in fare class order
Companions of Premier Platinum members
Premier Gold members in all other fare classes, in fare class order
Companions of Premier Gold members
Premier Silver in all other fare classes, in fare class order