"No longer available" speculation

So I'm literally just about to start 40k again and go and buy my Drukhari army when I see that quite a few of the items are listed as "no longer available" rather than "out of stock".

For me in the UK that's currently:
Venom
Skysplinter
Haemonculus
Succubus

Thoughts on what that means? New models? Have I picked a great or awful time to collect DE? Who knows! Either way it's a little inconvenient

Just to be inconvenient I think.
The same was the case of the razorwing for a few weeks and now it is back, as far as I can see the same as before.

It usually means "we don't think its popular so don't keep many available in the warehouse, but we'll make more now that they're sold out".