RESUELTAS
Im Australian and still haven't recieved the update, its definetley region specific and carriers also determine how long you will need to wait for any sort of update, im glad that you've finally been able to update your Z 
Some users are reporting issues with the new firmware to do with Stamina mode, keep an eye out for any problems and report back here and read some of the other suggestions/discussions in various threads regarding the issue.
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