In one of the interviews that happened before the parade, a 2nd artillery general basically confirmed the existence of the DF-41 program and says that it shall be more capable than the DF-31 in both penetration ability and range. However there is no definition on what DF-41 is, they could possibly just end up naming DF-31A/B as DF-41.
Thats just a new chassis in the pictures, it doesn't mean too much, when we actually see the missile then it'll be confirmation. The chassis is good though, it looks like a fully off road capable 12x12 platform, its alot better than the tractor trailer of the DF-31 platform.
Whoever said winning isn't everything must be a loser...