Not seeing .576 build

I'm using a lumia 540 and the phone is on the .479 build and not .576. checking for updates says everything is up to date

I've tried checking for updates using both 3G cellular data and wifi but no change.

Any ideas?

from Windows Central Forums //forums.windowscentral.com/showthread.php?t=448799&goto=newpost
via IFTTT