The chroma stealth keyboard became orderable sometime recently but won't add to cart now so I guess I missed it. I'll keep an eye on the chroma tournament stealth in case it becomes orderable too or maybe it already was in the last hour or two. I know none of the chroma stealths were available at 6:00pm PST though so kinda frustrating they magically appear hours later.
Last year the Blackwidow chroma stealth also wasn't available prior to the sale, I had my eye on it and it changed from "add to cart" to "notify me" a day before the sale started. I don't ever remember that changing throughout the sale, but it's not the first time I've seen them change an item to be out of stuck prior to a sale starting. A lot of people speculating that they were reserving stock just for the sale, but if I remember correctly they never actually came in stock at any point during the sale (at least not in the US store).
Sounds like bait and switch. Saying 50% off everything and suddenly right before the sale starts the most expensive shit 'out of stock' is an extremely beneficial 'coincidence' for them, especially if it happened last year as well.