The CEO of AMD is an unexpected, but probably very accurate, source when it comes to knowing the Windows 10 release date. First off, the news broke on a quarterly earnings call. When you make a statement on those, you have a strong legal obligation to be telling the truth according to the knowledge that you have at the time. Also, as a major hardware vendor of CPUs and GPUs, her company would have been notified by Microsoft so that they could plan development of graphics drivers and so forth. It also aligns with the “Summer” announcement made last month by Microsoft.
Of course, this led to a flurry of comments that claim three months will not be enough time to bake a successful product. Others, naturally, claim that Microsoft has been developing software for long enough to know that they can finish their product in three months. Still others shrug and say, “Yeah, you both make sense. I'm going to go play some Grand Theft Auto.”
One aspect that I don't see mentioned enough is that Microsoft has multiple projects and teams on the go, and we only see a fraction of what is being done in our Insider branch. Despite the narrative that Microsoft wishes to avoid another Windows 8 fiasco and they want their users to guide development, they have alluded that a major reason for the Insider program is to test their build delivery system. While I am having a bit of a hard time finding the supporting quote, I did find one reference to it being the reason for ISOs being delayed.
And finally – we heard from you loud and clear you want ISO images of the new builds we release. We felt it was important to listen to that and give you what you want – but there’s a catch. Getting the update & install data from our Preview Builds mechanism is super important for us. It helps us ensure smooth ESD distribution, download, and upgrade success for this program going forward, and also will help us ensure great upgrades for people once we release Windows 10. So we’re going to release the ISOs at the same time as we publish to the Slow ring. That means if you want to be FIRST and FASTEST to get the build, you’ll need to use our Preview Builds mechanisms (either automatic or Check Now in PC Settings to download.) If you must have an ISO you’ll have to be a bit more patient. I hope that you’ll consider that a fair tradeoff.
So what is my point? Basically, it is difficult for us to make assumptions about how baked Windows 10 is from our standpoint. They are being more open with us than ever about their development methods, but we don't know certain key things. We don't know what final feature set they plan. We don't know how much work has been done on any individual feature since it was merged into a build that we saw. We also don't know how much has been done by third parties. In some cases, a release in three months could equate to like, six months of work for a specific team since their last contribution was merged. I do think that any major feature we see at BUILD will pretty much be the last additions to the OS before it launches though, unless they have a surprise that will surface at E3 or something.
Also, remember that the things they show us are slanted to what they want feedback about.