Prototypist has done a couple rounds of custom CF plates before and their update today says that the next round (including POM now!) will start next week. If anyone has been looking to try some slightly rarer plate materials in your boards I suggest you start sourcing plate files for them 
They also have 60% tray mount CF ‘flex’ plates in stock since yesterday if that’s what you’re looking for, no waiting for custom cutting or having to provide your own plate file.
