Update Though tickets to the vast majority of upcoming Backstreet Boys [ tickets ]' performances are set to go on sale Saturday (10/11), onsale dates for tickets in at least four cities will take place later.

The box offices in Houston and San Antonio, Texas, report that onsale times are now scheduled for Dec. 18. In Oklahoma City, Okla., local ticketing firm Ticket Source says that an onsale date is to be announced. An onsale date is also to be announced for the Bi-Lo Center in Greenville, S.C.

As of this morning (12/10), ticket sales in all other cities were still set for Saturday, but changes in ticket onsale times and dates aren't unusual. The most current information about onsale dates can be obtained from local ticketing firms and from venue box offices.

Earlier this week, promotion, ticketing or venue sources in each city on Backstreet Boys' recently announced early-2000 itinerary told liveDaily that they were planning onsale times for Saturday (10/11).