I was at build and here are some of my thoughts.
Windows Phone had almost no presence at the conference. When they announced the new Azure Mobile Management App, it was announced for iOS and Android, later through a tweet someone at MS mentioned that a UWP app is in the works. This is cryptic because UWP does not necessarily mean a mobile app. Yeah I know that most people use iOS/Android, but MS is NOT some struggling startup, with extremely limited resources. You mean to tell me they could not have developed a UWP/Mobile app at the same time as their iOS/Android offerings? Especially since they now own Xamarin, and keep promoting the whole: write once, run everywhere line... Also the HP Elite was marketed as a business phone, and apparently enough customers wanted HP to make a phone so they would have one OEM for all of their IT needs. So not supporting those customers with what is clearly a business app is a bit strange.
LinkedIn: The ink has long dried, and they are now part of MS. So why no update to the Windows Mobile App? MS has the iOS bridge to Windows Mobile. You would think they could get a intern or two to take the LinkedIn iOS app and port it to Mobile through their own bridge!?!?!? Wishful thinking is that they might be developing a from the ground UWP re-write, but before that is done, how hard would it be to use the bridge and port the iOS app?!?!? MS cannot even be bothered to do that, using their own tech? That speaks volumes right there...
NO mention of the Fall Creators Update coming to Mobile. NO demos of their new design language on Mobile. NO news at all about mobile.
I had a chat with a MS engineer on the last day of Build. It was a really good conversation. He mentioned how Satya has changed the mandate of the Company from Devices and Services (Ballmer) to a Services and Platforms mandate. This was very clear at this year's Build. The Azure Keynote was presented on the first day, and the Windows Keynote on the second. This was the first year, Windows took a back seat. Previous Build's had OEM's present showing off their latest wares. This year, not a OEM, or device in sight. It was all Azure and Graph, with a lot of HoloLens thrown in.
To show how little devices mattered, they had the Cortana speaker on stage during a demo, with NO details about it mentioned. In fact you would be forgiven to think it was a new Amazon Echo on stage... Sure we all know it was not, but damn not even a peep about, oh yeah here is our new Cortana speaker...
Even Windows on ARM was only mentioned through a supplemental video released through Channel 9. I know this stuff may not be ready yet, but at least give us something to be excited about.
I feel Windows Mobile as entered maintenance mode. While they did not give an exact release date for the Fall Update, Fall is not that far away. So I don't buy the, we needed to break the branch to do some work on the Core before Mobile catches up to the Desktop branch. With 4 to 5 months left before release, if Redstone3 does not appear on Mobile before mid June, you can bet Mobile is dead, and they are just maintaining it for contract reasons.