There's no file seen in the 2nd link's directoryThe installers was published temporally here, but was removed:
Index of /products/english/homeuser/kis2018/
But meanwhile You can use this one, which is TR build that admits commercial licenses, and usually is the same than final build...
ftp://ftp2.kasperskyftp.com/consumer-products/Current_Versions/2018/
I just opened the link on my Windows client and it workedAha, some users are getting the same result when accessing to that FTP, it seems there is some IP filtering, but files are there:
View attachment 160468
If You want, I may download it for You and upload to a free service...
This is a Release Candidate (RC) version that follows the Beta testing cycles. You can say that the Beta stage is almost over (there's usually an intersection between Beta stage and RC stage). It's at the Technical Release stage where the software developers have signed off.
I've just recently installed the latest 2018 version and so far I've not encountered any issues. So far, so good!
There are no official details available. Yeah, it's now up to the marketing team to decide when to roll out. There can be business reasons behind the timing.