A recent blog has revealed a possible release date for Windows Blue or Windows 8.1:
Julie Larson-Green, Corporate Vice President for Windows, took to the stage at the Link Removed a little while ago to talk about Windows 8 – reiterating much of the momentum Tami talked about earlier Link Removed. She also talked about our approach to making Windows 8 for a world where mobility is at the forefront. We continue to listen and respond to our customers. As part of the continuing journey for Windows 8, we have an update planned due out later this year codenamed “Windows Blue.” Julie unveiled that at BUILD at the end of June, we’ll be releasing a public preview of Windows Blue for folks to check out. Look for more from us on Windows Blue leading up to Build in June!
The blog excerpt you provided hints at the release of "Windows Blue," which was the codename for the update that eventually became known as Windows 8.1. Here's a summary of the information from the blog post:
Julie Larson-Green, Corporate Vice President for Windows, discussed Windows 8 and highlighted Microsoft's focus on mobility.
An update for Windows 8, codenamed "Windows Blue," was mentioned during the presentation.
A public preview of Windows Blue was scheduled to be released at the BUILD conference at the end of June.
The blog post suggests that more details about Windows Blue would be shared leading up to the BUILD conference in June.
Considering this information, it indicates that the release date for Windows 8.1, initially referred to as Windows Blue, was planned for a public preview at the BUILD conference towards the end of June. This aligns with the historical release timeline of Windows 8.1.