I've just watched the latest episode. There was a preview of what is to come in the future of this third act of the season.
All I can see is the following:
The time is 5:11. One of the toys had been playing Halo and left mid session, only one controller was in the chair meaning the toys weren't together at this point. There is a close up of the warning sign belonging to a vacuum cleaner. Half of Chief's body is lying still on the bathroom floor. There is glass/plastic shattered and lying on the floor in front of the front door of the apartment. There are 2 bloody holes on the front door of the apartment and the blood has dripped down to the letterbox lid. Arbiter is standing on the edge of an open window convincing himself to jump out and kill himself.
I'm now trying to think of what we can gauge as to what is going to happen from the preview.
My best guess is that Chief's hallucinations of Cortana have guilted him in to confessing to Arbiter that he murdered Cortana. Arbiter after hearing this news decides to kill Chief by using a vacuum cleaner to tear Chief in half. Arbiter then thinks that having Chief is better than being alone and goes to window to consider killing himself.
I'm still wondering why there's blood on the front door of the apartment. Perhaps a human entered the apartment and had a gun with which he shot himself with. I'm going to guess that Euguene discovered the Toy's location or Jon finally shows up.
Please post some predicitons, I don't have much