It is really too early to tell...silkies are notoriously difficult to sex. If I had to guess, I'd predict male, based solely on the Don King looking crest coming in. It seems to me that a female's crest would come in more evenly, if if just a small crest. Sorry to say, only time will tell.
My only advice is to monitor, monitor, monitor when you do add your silkie to the pen. Silkies are pretty docile, and between that and their smaller size (at least if your other birds are standard size), they tend to get bullied if new to a flock.