A new build of Redstone 2 for Windows 10 Mobile for Fast ring Insiders, though don't get too excited, just a few bug fixes and still some serious known issues in terms of language packs. Still, Microsoft's got 4 months to finish the software, right? Comments welcome on anything you spot that's fixed that had been bugging you....

From the Microsoft blog post (albeit referring to several things which are PC-only at this point!):

Today we are excited to be releasing Windows 10 Insider Preview Build 14965 for Mobile and PC to Windows Insiders in the Fast ring....

...Other improvements and fixes for Mobile

• We fixed an issue where, when using Cortana in French (France or Canada), the “Prendre une <photo/video/selfie>” (take a picture, video, or selfie) command was redirecting to a Bing search rather than opening the Camera app as expected.
• We fixed an issue resulting in Cortana crashing if you typed “Create an appointment” then tapped on the resulting suggestion to “Create an appointment”.
• We improved the performance for English (India) text prediction.
• We fixed an issue in Data Usage Settings, where after selecting the data plan to be unlimited, it would still prompt to set a limit. We’ve also made it easier in the Data Usage Settings for those with dual SIM phones to differentiate between the cellular data use on each SIM, and fixed a few other polish issues, including that the sort by dropdown on the Usage Details page was unexpectedly wide.
• We fixed an issue where Narrator wasn’t giving feedback when adjusting sliders, for example in Settings, or in the Volume flyout.
• We fixed a migration issue resulting in Microsoft Edge to fail to launch for some Insiders after updating to a new build.

November 2016 Bug Bash Update

This week we kicked off our internal Bug Bash and are including Windows Insiders, which will run through Sunday November 13th. Everything you need to know about how to get started with the Bug Bash can be found in the Feedback Hub article here. This build can be used for the Bug Bash. We wanted to take a moment and say THANK YOU for participating in the Bug Bash alongside us and providing great feedback. Engineering teams are actively going through your feedback, understanding the issues, prioritizing, and then determining what next to do. Your feedback counts and goes a long way in helping shape Windows 10 as we make important engineering decisions! If you have feedback on how the November 2016 Bug Bash is going for you, let us know.

We will be live streaming Bug Bush Quests at https://beam.pro/WindowsInsiderthis weekend if you want to join us in completing Quests together. We will be online Saturday November 12th from 1-3PM PST (21:00 UTC).

Known issues for Mobile

• If you used the previous ‘date change’ workaround to update to Build 14951 or Build 14955: Please don’t use it any longer! The Microsoft account (MSA) ticket on your device needs to expire and then you’ll be offered today’s build. If you changed your date by 30 years… you’ll want to do a device reset.
• You will be unable to install additional languages, keyboards, and speech packs on your phone for the next few weeks. If you have existing languages, keyboards, and speech packs installed – they will carry over when you update to new builds. You just can’t install any new ones. If you do a hard reset of your phone on these builds – you will also be unable to install additional languages, keyboards, and speech packs. You can use Windows Device Recovery Tool to go back to Windows Phone 8.1 or Windows 10 Mobile, install any languages, keyboards, and speech packs you need and then update to the latest build in the Fast ring as a workaround.

So nothing really new (for Mobile), an incremental update, but always worth applying, just in case. This build is happily installing on my test phones. Phew! (after some recent builds requiring jumping through hoops). 

Of course, in the fulness of time we'll need a summary of what's new going from Redstone to Redstone 2 (Anniversary Update to Creators Update), but we won't have a full feature set or changelog for a while yet - this mobile OS has got legs, even if the number of licensees isn't overwhelming (though we had a new flagship device only yesterday). Settle down for the long haul, everyone....!

Anyone with an existing phone that's officially deemed Windows 10 Mobile compatible by Microsoft can join in the fun. The full list of phones includes Lumia 430, 435, 532, 535, 540, 635 (1GB RAM version), 640, 640 XL, 730/735, 830, 930, 1520, Icon, BLU Win HD w510u, BLU Win HD LTE x150q, and the MCJ Madosma Q501. Plus, of course, all the devices which have shipped with Windows 10 Mobile in the last year, of which the Lumia 550, 650, 950, 950 XL, Acer Jade Primo and HP Elite X3 are the highest profile.

In each case:

1. Upgrade to Windows 10 Mobile (if appropriate) using the Upgrade Advisor.
2. After at least one update cycle you should then be on the Anniversary Update (a.k.a. Redstone). Head into Settings/Update & Security/Windows Insider Programme
3. Join the Insiders programme and choose the 'Fast' level in the pick list.
4. Within a few hours your phone should be seeing the build mentioned above and you'll be running next year's mobile OS today. Fun, fun, fun....!