Microsoft's continued focus on low-end devices continues today as they have pushed the Windows Phone 10 build to only a subset of Lumia devices all of which are low-end Lumias.
If you have a Lumia 930, 1520 or 1020, you wouldn't be uploading the preview today, sorry!
Here is the list of devices that will get the build today...
- Lumia 630
- Lumia 635
- Lumia 636
- Lumia 638
- Lumia 730
- Lumia 830
Here is what Microsoft had to say about it...
"We're working to get more Windows Phone models supported worldwide. Download the Windows Insider app, and when your phone is supported you'll be able to sign in with the same Microsoft account you used to join the Windows Insider Program. Windows 10 Technical Preview currently works with the following phones—as long as they have at least 8 GB of storage and Windows Phone 8.1 was already installed on the phone at the time of purchase:"