It seems that 10-42 is not wide enough and SRAM will push it further by quite a lot: http://www.thebikecomesfirst.com/possible-leaked-photos-of-new-sram-12-speed-eagle-drivetrain/

I read rumors about SRAM increasing the low gear beyond 42T but it surprises me to see 50T.  For my riding 10T-42T x 32T is enough range.  If anything, I would prefer a little more top speed so I may look at a 34T chainring and a 10-44T cassette.

I think it's good to see so many drivetrain options.  Gone are the days of only being able to choose 2x10 or 3x10.  The 1x setups are so good that I don't think I will ever want a front derailleur on my mountain bike.

There were two threads on MTBR and got deleted by the Mods fast.

I think that SRAM is trying to render the front derailleur obsolete in all riding conditions. It will also allow you to run a much larger chainring up front.

Got deleted why?

It probably got deleted because it's not announced yet (under press embargo) and the forum probably wants to avoid the wrath of SRAM from either a legal perspective or as a potential advertiser.

This all makes sense now... At Leadville I was in the SRAM booth and the engineer smiled funny when I asked when the 44T was coming out.  Then he said he couldn't confirm or deny.  Now I know he knew this was coming...

I'm not opposed to this at all.  But it's of limited use to me.  I don't use the 42T much.  I would love a 44T and then a larger 34T or 36T in the front.  This would let you run a 40T 42T up front.  But them my frame wouldn't support anything larger than a 36T anyway so moot point.