Can anyone tell me if the Vance and Hines CS-One #40507 Slip-On Pipes will fit a 2014 Monster 796.  The V&H website does not acknowledge year 2014.  There is lot's of information on the web (i.e. youtube, etc.) that indicates the pipes will fit.  However, I called V&H and they would not confirm and said that they have tested up to 2016 696

Honestly, if a company doesn't communicate in a way that instills confidence and goodwill, then I go elsewhere or at least try talking to someone else in that business who may actually know something. FTR, I have used V&H products on my former YZF750 which were excellent.
Give it another shot and if you're not happy then call our sponsors. Or just call our sponsors

Welcome to the Family.

It was a common mod to put a Y-pipe (under the seat) from a 696 on a 796 (and 1100?) to loose the exhaust valve. That's my reason to vote YES.

Have you studied the stickied "exhaust thread" for your bike?

I would be very surprised if it didn't fit... they're all the same.  If you are feeling frisky, you could compare the OEM part numbers between years (say, 2013 and 2014) to see if Ducati used the same part... that would be the easiest way besides just buying one.

Thanks all for the comments.  To take my question one step further, does anyone know if I will need remap the ECU as the V&H CS1 slip on pipes do not not have a baffle and I'm concerned that the bike may run even more lean than what it does with the original mapping (hence more deceleration popping)?

I wouldn't think so.  I run my Arrows with and without the DB killers and it doesn't really make any difference.  It did clean it up... I don't get nearly as many backfire through the carb hiccups anymore, and I can lug it down under 4000rpm... about 3600rpm with my modified baffles, 3200rpm when they are out, I couldn't do that with the stock exhaust.  Generally speaking, unless you are opening the air box up, you shouldn't have to remap.  Not saying it wouldn't help, but you don't have to.  I was all worried about it when I got my Arrows... now I'm as happy as a pig in slop.