Expect the unexpected!
Seriously though, no breeder can give you a 100% guarantee as to how the coat will look for a kitten's entire life. And if the breeder tells you they can...well, I would proceed with extreme caution!
This is something that again depends on the factors above. I have bloodlines that molt every 6-8 weeks. I have bloodlines that molt once per year as adults. I have bloodlines that when they molt they lose almost all the coat, and bloodlines that just lose the hair on their neck.
Where Lykoi molt on their body also varies. I have been quite surprised by how many of my kitten owners email me worried with their kitten's first molt because they didn't realize how it works! LOL! Molting can mean they end up with only a Mohawk, or a reverse Mohawk. It can mean they lose all the hair on their heads while having a full coat everywhere else, or just lose all the hair on their hips....basically they can decide to rock whatever hairstyle or male pattern baldness they wish! Sometimes they will rock the same look for several molts in a row, other times they will switch it up! I had one girl that molted only angel wings on her back!
Okay, so what can a breeder tell you? We have found that 9 times out of 10, the kitten in the litter that wolf out the fastest (loses his hair the fastest) will have the thinner or more unstable coat of the litter. The ones that take longer to wolf out, tend to have more stable coats between the littermates. Keep in mind there is still a great degree of variability here depending on which bloodlines are involved. In a litter from lines with weaker coat, that could mean the fastest kitten to molt will have very little hair as an adult (nearly Bald most of the time), and the "best coat" in the litter could still have very little coat (but by comparison to the fastest to molt sibling, he would have a nicer coat). Again, this is not 100% accurate, but it is the best tool a breeder has at this moment. Have I had a baldy that later had the perfect show coat? Yes. Have I had a perfect show coat go bald? Yes. But 9 times out of 10 it comes pretty close to giving an accurate indicator. It is also not something you can look at the kittens as an outsider and determine unless you have seen pictures every day. Because keep this in mind...the fastest to molt is going to grow back in the coat first. So when looking at photos of the entire litter during that time of molting, you may see the little hairy wolfie baby and think "Ah! That one has the best coat! Gimme gimme!", but that kitten could have already molted long before the siblings and is now growing back in the hair, while the other littermates are just losing their baby coat. And since they did it slower, they haven't grown it back in yet...which means as adults, they will most likely have better coats. Alos, not all breeders are working with the same bloodlines, so they may or may not have the thicker show coats born as often.So that is something to consider when picking your breeder as well if you are hoping to stack the odds for a certain coat type.
In summary...if coat is a big deal to you, you really need to talk to your breeder! And if the coat looking a certain way is a really BIG deal for you, and it needs to always have that perfect werewolf look.....than the Lykoi probably isn't the breed for you! Part of the charm of these crazy cats is you never know what stage of wolfing out they will be, or what you will wake up snuggling on any given day!