** [Aug 2, 2018] UNET is deprecated .**
[Posted Early Dec, 2016] TL;DR: From what we can see, Unity abandoned UNET, HLAPI, Host Migration, and any intentions of proper docs/demos for these 1.5+ years ago.
To this day, not 1 staff has denied it (because there’s no staff in this part of the forum).
Even the open-source BitBucket only had only the debug logs updated in the past 1.5 years just to update the date for anything relating to these files.
@ , your networking docs are absolutely beautiful, your demos are inspiring, and your videos are clear + to the point, however, your pre-game/UNET/MatchMaker/HostMigration docs are sparse, conflicting and 2 major versions behind (as of December 2016) - and current demos/videos don’t exist. How can you even advertise these as stable features if it’s incomplete and you don’t even answer even the most generic Q+A?
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If you want us to use UNET commercially, please at least add some staff to patrol the mplayer forum while your docs/demos are updating (because if it’s 5.5 now and the docs were due in 5.3, are these docs even coming?). Even 1-line responses can save us weeks of trial+error. Even other community members can’t assist each other because no one knows the standard - it ends up being quite the paradox. Hang out just a bit then the community can take over. If I can get a solid lobby working, I’ll even make a 2nd video explaining it simply so everyone else will have a base to go by until the official docs are updated.
What is happening now is most of this forum is regarding Photon because they provide support and docs for the product – while Unity usually provides excellent customer service, support, docs and demos, there’s this “black hole” for the multiplayer lobby, UNET, MatchMaker, host migration, and anything pre-game.
Don’t get me wrong, your docs for in-game multiplayer, demos and videos are SPECTACULAR! It’s just that pre-game takes 100x longer than the core game simply because the core networking is documented and has people that can answer questions, while pre-game is not because no one knows! 
Anyway, just a plea to UNET devs to update their pre-game docs and perhaps answer a thread or 2 every now and then**. Once you answer some standard Q+A, the community will eventually be able to take care of each other** and we won’t need specifically dev help-- or even better, update the docs and we won’t need anyone for general Q+A!
EDIT: I present to you THE ONLY (both official+unofficial) docs/tutorials/vid on the internet for UNET/Lobby/HLAPI: https://forum.unity3d.com/threads/hlapi-matchmaker-lobby-workflow-unofficial-documentation-please-contribute.446516
EDIT 2: Now that these modules are more or less abandoned, I officially am swapping to Photon. Sorry guys, I tried everything.
EDIT 3 (March 2017): There’s a new “Tanks!” demo, but it’s from a 3rd party and completely bloated, not even using the new stuff. It’s optimized for production, so it looks like nothing you’d expect to see from any form of tutorial. Still no docs updated. Still no staff to argue it’s not abandoned. Still no docs updated. Still no proper demo. Still no proper video. Host migration still not fixed. Still no staff roaming this part of the forum. Still no one to answer questions. All signs still point to abandonment - what a shame…
the QA kept poking the devs to respond and they just wouldn’t do it. Eventually the QA literally gave up and told me the truth, saying “I can’t force them to answer your question”… He even started learning UNET/HLAPI himself so he could try and help me (what a cool QA). In the end, unfortunately, still never got an answer.
still no response O__o I monitor the Multiplayer section every now and then. I still say it’s abandoned and have no idea why no staff is being hired to handle these features and this section of the forum. Other sections of the forum flourish – I understand that mplayer is more difficult, however… come on, it’s Unity – 