UPDATE: It’s not the Star Wars Insider going on hiatus, it’s sister publication Star Wars Magazine, which used to be a Clone Wars-based publication, Jedi News corrects. So basically, nevermind. (And that explains why I didn’t get the hiatus email!)
Per their website, Star Wars Magazine hasn’t put out an issue since October.
The Star Wars Insider, which has been published by various companies over the years, traces back to Bantha Tracks, the original official Star Wars Fan Club newsletter. The current numbering began when it was called The Lucasfilm Fan Club Magazine; It was renamed to Star Wars Insider in the early ’90s.
The current publisher of both is Titan Magazines, which handles a number of franchise publications.
Star Wars Insider #156 is in stores now.