So, after quite a delay, it looks like I was one of the lucky Jewel Heist Winners - my second package arrived and it was the collection. I've attached a photo of the box, with the unannounced colors. (Sorry, it's not a great image.) Thanks to everyone who advised me this might be the case - I never got an e-mail or anything to inform me I was a winner, just the mysterious shipping e-mail. My main mystery box was the mask noir, mascara, and mustard colored polish. Like a few other winners (I've heard), the polishes were poorly packed, and one of the bottles was chipped at the corner, but thankfully it was just the glass on the corner of the bottle, and all the polish was intact, so I'm not going to bother complaining, as I think it might be too much hassle to get a replacement.
So, I was lucky and certainly got my money's worth from the mystery box this time, but after hearing about the bad experiences/expired products that others have experienced, I might forego in future.
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