Barry Allen rambling from "The Flash Reborn" came to light through the repeating of the words, "I'm innocent, your honor; I didn't kill anyone". It is highly possible Barry experienced his trial and jail sentence whilst in the Speed Force.
Team Flash is now investigating every quote Barry Allen made when he came out of the Speed Force, as they are possibly linked to future events.
The sentence of Barry Allen, is that of a life sentence without the possibility of parole. This is significantly similar to his father's sentence for the supposed murder of Nora Allen.
This episode is that first incidence that Iris was able to talk to Barry whilst moving faster than the human capability causing the room to be seen as frozen. It is unknown ability demonstrated by Barry.
Unlike his DC comic counterpart, Barry is not immune to DeVoe's telepathy.
The last scene shows Barry placed in a cell, which wall has a carving with the words "HENRY ALLEN WAS HERE" written showing that police, either knowingly or unknowingly, placed Barry in his father's cell.
The Flash - The Trial Of The Flash Trailer - The CW
The Flash Framed Trailer The CW
The Flash The Trial Of The Flash Extended Trailer The CW
The Flash The Trial Of The Flash Scene The CW
The Flash 4x10 Sneak Peek 2 Season 4 Episode 10 HD "The Trial of The Flash"