Don't Expect Everyone to Get it At Once
There's a good chance that you will get access to the Uncharted 4 beta tomorrow. There's also a good chance that you'll have to wait beyond the initial release time for your copy to become available.
Naughty Dog says that it will be taking a staggered approach to the release. Some regions will get it earlier than others. The roll out will start at 12PM Eastern in Europe.
It's not clear which regions will get the Uncharted 4 beta first and which will get it last. There's also no guarantee that everyone will get the beta tomorrow. We're expecting the U.S. to get the Uncharted 4 beta on Friday.
Be patient. Naughty Dog will do its best to ensure a smooth roll out and that could take some time to accomplish. We'd follow the Naughty Dog Twitter account for updates.