If you "successfully" applied for the NXE beta and didn't get in last week check your Xbox because Microsoft has
opened the preview to everyone who applied to get in. This is actually a fairly cool move by Microsoft as it allows people to sample the NXE ahead of time and it should distribute the load a bit so that people don't kill Xbox Live when the update is officially released tomorrow. If you want to see what the install process looks like here's a video that Microsoft released last week.