Windows 10 Creators Update version number is 1703 March 12th, 2017 But wait there may be more than meets the eye. Version numbers are YYMM or 1703
The Windows 10 Creators Update Preview build 15042 that was rolled out to Insiders in the Fast ring two weeks ago, Microsoft had removed the “Insider Preview” expiration date.
Since then Microsoft has released two more builds, 15048.
Currently preview build 15055 (the latest release) to both the PC and Mobile Insiders in the Fast ring on March 10, 2017 which included a large number of bug fixes. Last October I predicted (-----> ) the version number would be 1703, build 15055 changes the version from 1607 (Windows 10 Anniversary Update) to 1703.
This doesn’t mean Microsoft will not hold off and release it April as the Anniversary Edition is Version 1607 but was release on August 2nd and not in July. So it is entirely possible a very early April release date (April Fools) is not of the question.