The newest issue of X-23 hits newsstands today. Be sure to pick your copy up.
I've yet to pick mine up, but today has been a rather blah day. So I may wait until tomorrow for that. Reviews for both issue 4 and 5 will follow. I might even do the review for 4 tonight since I'd rather do the review before reading the next issue. As it is, I've been avoiding reading the preview for that very reason.