Ford does offer a "software kit" in the form of being a vendor for Mountune with their re-badging of the Cobb Accessport. Ie: MP205-MP215-MP230 flash tunes. They don't have one directly.
Mountune wont void the warranty really if a ford dealer is a ford performance dealer and THEY offer it. It's dealership specific to my understanding. Likely, any of it will be a no, it will void it to the parts changed and most dealers wont warranty aftermarket parts. If you update the software via cobb or mountune, you will void your warranty if something happens and they see you flash tuned it. I've asked a few as well and talked to the manufactures and they all claim it's hard for them to see it but if they do, it'll be flagged by their system. They do have the right to void it completely. My dealership where I bought mine and all the ones in the surrounding area have told me the same thing. Flashtunes will void it just like any other modification to factory parts. If you damage your engine, and they see it was flash tuned (they will one way or another, trust me.) It wont be covered. IT doesn't always happen but if they have very thorough techs and you've brought it in before, they'll know.
No there wasn't much of a design change in the actual structure of the stock intake tube, only the fact 2016+ has a check valve in the stock tube and has two vacuum lines to the intake. The silicone tube with likely fit as my injen intake for a 2014-2015 did. You will need a check valve for the intake to not send a evap code CEL. Mountune has one...but as with many others, people have problems after a short amount of miles and the check valves get stuck. It's a on going problem. Many people have problems with it. The solution I and others have is from [MENTION=5976]ron@whoosh[/MENTION] and it's a great product. Won't cost you a arm of leg either. Works awesome and works where some others have failed. Some of the others won't sell you their fix separately so you have to buy the whole kit from them and not second hand...but if you want to go that route, great! If not, go for whoosh, you won't be disappointed.
Hope this helps!