Last week, Microsoft released build 10136 of their Windows 10 Mobile OS. However, there was one catch: if you wanted it, you had to downgrade to 8.1 and then upgrade through the Insider program.
Today, Microsoft has released build 10149 and the good news is if you did not do the downgrade, you can now directly upgrade to 10149. Microsoft's Gabriel Aul states specifically:
"Those of you who chose to stay on Build 10080 and not go back to Windows Phone 8.1 to get Build 10136 will be happy to know that you'll be able to upgrade directly to this build – so you won't need to flash your phones back to Windows Phone 8.1."
So if you were waiting on the sidelines, Microsoft is on your side today, and you can go and grab that latest update!
Source: Windows Blog