According to TMZ, UFC is refusing to put Conor McGregor back on the UFC 200 show after his Facebook post today where he made it very clear he still wanted to be on the show and was not retiring.
Given that UFC has not announced a new main event and thus started promoting a new fight, it makes no sense at this point not to put McGregor back on, unless the dispute was something very different than has been portrayed or if McGregor would not do the necessary promotional work such as appear on the promo commercial.
McGregor's earlier post was a public statement that he wanted to be on the show, but it was posturing for him to not be blamed for any issues that led to the fight falling apart. It is still unknown what the real behind-the-scenes issues are that are keeping the fight from taking place.
But it is also still in everyone's best economic interest for UFC 200 to be as big as possible, which can only happen if the fight ends up happening.