The fear of course was that this could stretch into weeks as Microsoft, T-Mobile and HTC work to fix whatever it was holding up the update. Luckily, the delay now looks to be have been only 24 hours as T-Mobile and Microsoft have just now thrown the switch, delivering the update to customers.

T-Mobile and HTC have had quite a back and forth recently regarding the Windows Phone 8 “Portico” update (build 10211) We first heard about the 8X update just a few days ago and the original intent was to roll it out yesterday, December 19th. But at the last minute, we received word that T-Mobile was halting the rollout due to some last minute "tweaks".

The information comes via T-Mobile’s official support forums where their moderator delivered the news:

“Good news everyone! We're releasing the update today! I can definitely understand some of the sentiment in some of the above posts, you deserve to have a properly working device. This is why we wanted to ensure we did everything we could for a smooth update. Thank you again for your patience.”

The update is now live, having begun at 1PM ET.

The Windows Phone 8 OS “Portico” update brings numerous fixes and new features to the table, include improved Bluetooth pairing, stability improvements, new Messaging features, reject-call with SMS, keep Wi-Fi alive and preferred Wi-Fi HotSpot selection. You can see the full changelog here.

In addition to the new OS, users will also have a new firmware installed during the update process, which should take around 30 minutes. Users can get the notification delivered to their phone by going into Settings --> Phone Update and manually check for the files.

No word on Nokia’s Lumia 810 and that update though we presume it’s not too far behind.

Thanks, Jeremy A., for the tip!