Many Microsoft watchers were expecting the company to launch Windows 10 version 1803 to the general public this week, but the company apparently hit a blocking bug which ended up holding back the release. Anyway, what many believed to be the final version of the big update did roll out to all Windows Insiders via Insider build 17133, but new evidence suggests that this might not be the final Redstone 4 build after all.
We can confirm 17134 exists, it's a little brave to start announcing it as new #Windows10 RS4 RTM though. (The full string will appear sooner or later on BF)
Who knows what is going on in the minds of MS at this stage. https://t.co/j3pid2BYii
— BuildFeed (@buildfeed) April 12, 2018
According to Microsoft watcher Zac Bowden, Microsoft has compiled a new Redstone 4 build which is currently above the 17133 build number. This is not uncommon, and BuildFeed also confirms this, but it puts into question if this latest Redstone 4 build will actually be considered RTM.
There's no telling what is going on at Microsoft, but it is highly possible that this new Redstone 4 build is coming out soon to address the blocking issues. Redstone 4 release has already been delayed, so Windows Insiders might have a few more days of testing at least one more build ahead, followed by a general rollout of a post-17133 build to the public.