Windows Phone fans anxious to receive the latest Update 1 (GDR1) upgrade for their smartphones may want to know that Microsoft is likely to have a newer version of this update available for download soon.

Windows Phone 8.1 Developer Preview adopters who have already upgraded to Update 1 are probably aware of the official firmware numbers that brought their smartphones to the newest version of the operating system: 8.10.14141.167 or 8.10.14147.180.

However, it appears that there’s a newer version of Windows Phone 8.1 Update 1 in the wild. 8.10.14152.0. The new version of the platform has been spotted recently in WPBench database and it was added about 8 days ago.

Given the small number jump of the new version over the previous ones, we doubt this is a major update that could be tagged as GDR2. Still, there may be some major improvements and bug fixes included in this version of Windows Phone 8.1 Update 1.

Unfortunately, it’s unclear when and whether Microsoft will make firmware version 8.10.14152.0 available for download to all Windows Phone 8.1 Developer Preview adopters, but we will keep an eye out for any additional details so stay tuned for more info on the matter.