Just saw these pictures of a leaked United ball set to be released next season. The balls that Adidas make always hint at the kit and how it might look (pattern, colours etc.) All we know about the new home kit is that it will include lots of black and possibly even black shorts, and is set to be "inspired by the railway men that formed the club".
Here is the possible 'pattern' that might be on the kit:
The thinner black stripes sort of look like rail tracks, which is supposed to be the inspiration judging by the rumours. Don't know how to feel about this but I'm very much looking forward to seeing the shirt.