Do you really think a single and/or video now would have more impact than the 2 that were released when CD came out? I kind of doubt it
I think they had every intention of launching the album with a proper single and video, however things happen which change these plans...obviously....by the time things got sorted, the album had probably already been out weeks or even months....and it makes sense that they have held back a video until this tour is announced, thus boosting hype, ticket sales and album sales (all IMO though) at a crucial time...
The thing is, GNR don't do things by the book...