Man, I was just checking the publisher's website and the author's socials yesterday, thinking the same thing. The listing on most major retailers still says 'coming soon' with no concrete date, which is always a bad sign. Last I heard, there were some distribution hiccups with the initial print run—something about a paper sourcing issue that's affecting a bunch of mid-list fantasy titles right now, not just this one. It's super frustrating because the ARC reviews from last month were glowing, and now it's just radio silence.
I wouldn't call it a formal postponement announcement yet, more of a silent slide. Those happen all the time, especially for debut novels where the marketing schedule isn't set in stone. My local indie bookstore said their distributor pushed the expected date back by about six weeks, but they haven't gotten an official update to pull the placeholder. I'm trying to be patient, but it's tough when you've already cleared a spot on your TBR pile.