There is a story currently on Bloomberg news ( sorry I don’t know how to imbed the story, perhaps someone can do so in the comments) that says That Robert Mueller has asked a judge to grant immunity to five people who may testify at next week’s trial.
The witnesses weren’t identified. He said that the five would most likely plead the fifth fi they do not receive immunity. they will only be made public, if they are indeed called to testify.
Not being a lawyer I don’t know if this means that the trial will be going on and Manafort won’t be flipping, or if it has no meaning to that likelihood at all. I thought it was worth sharing.