There are upheavals going through the magazine distribution business right now and they’re going to affect F&SF. Specifically, copies that were distributed through Anderson News Corp. or Source Interlink might not be distributed right now.
Most of our newsstand and bookstore distribution won’t be affected, but some people might find F&SF absent from their usual spot. We’re hoping things will get sorted out soon. Meantime, you can always order copies directly from us.