Neither story was ever substantiated. And, according to Segan's report, there's good reason: T-Mobile's Brodman says the delay was purely the result of technical issues.

"The biggest challenge is integration and customization," Brodman is quoted as saying.

T-Mobile's Vibrant upgrade, like most over-the-air software updates, will be sent out in waves. That means it could take several days or a few weeks for the process to complete and every handset to be upgraded.

So what about the other carriers? Sprint has already come forward with an update on its Galaxy S smartphone, sending out the following message this afternoon: