Someone leaked what is almost certainly the upcoming deluxe escalation unlock. I’m going to blur everything going forward since this is beyond speculation, screenshots are included in the linked comment. If you want to reply directly to this post (either here or original thread) please spoiler blur all your posts. Some people really want a surprise and don’t ruin it for them.
It looks like the final unlock is going to be tied to Hitman Contracts. I’m personally happy with it but can see others being annoyed. The outfit looks cool to me but I don’t see much of a connection between the Meat King and Berlin. Other missions in Contracts seemed more fitting, let alone other games in the series. Still nice. Kind of happy one of my favourite missions is being referenced but I am a little sad for the people who wanted an Absolution themed one.