Does this special edition imply a K-1 replacement announcement is imminent?

What you've discovered is that the Pentax 18-55 kit lens is much better than similar lenses by other marques. Probably the best of the kit lenses. See someone else's thoughts on that comparison here: https://www.dpreview.com/forums/post/38371841
Their verdict was the Sigma is worse.
Rather than getting the full frame Pentax 24-70, which while a good lens is overkill for APS-C, for APS-C use have a look at the 16-85. I find that's a brilliant lens, especially given its really wide angle. I'm sure you wouldn't regret getting one of those!
If you really want a Pentax 24-70, I can't believe they haven't made New York yet! B&H have them in stock for mail order or you could call in! https://www.bhphotovideo.com/find/HelpCenter/StoreInfo.jsp#nycSuperstore
Bear in mind though that its much heavier than the APS-C lenses you have and doesn't go anywhere near as wide, viz 24mm compared to 18mm or wider. However, if purchase of a K-1 is being considered then that's another matter.

Do you mean the Limited Edition SEAT Cupra K1 ?
Err, no!

The PLM has the advantage of having a more compact design so takes up less space in the gadget bag, also faster, quieter focussing. Optically they're all fine and great value for money.

Why? Because if they were sold to you as high quality optical gels and they're not it sounds as if you've been sold a pup. But I haven't seen them so ultimately only you can decide what to do with them. Don't forget you asked for advice in the first place!

There's different stages . Have a look at this. IMHO, yours looks to be the 4th or 5th instar, so nearly an adult.

Very good. It's definitely a shieldbug, possibly the Hawthorn Shieldbug. Looks like you were on first name terms!

Change it to:
(1, 2 ,8 )

8 and bracket together is read as

Re the photos, I like the brown tones in them. Shame about the wires in some of them, for something more than a record shot I'd be tempted to clone those out. The K-3 with 16-85 is a great combo.

Are they actually genuine, or are they perhaps some other gels cut to simulate the Irix ones, ie fake?

From the PayPal Guidelines
If the seller has accurately described an item, but you’re just not happy with it, if you fail to open a dispute within 180 days of purchase, or if your account is not in good standing, you are mostly likely not covered by PayPal Buyer Protection.
So refund isn't a given if the item is as described.