Apple released Aperture 3.2.2 on Thursday, an update that improves support for Apple’s Photo Stream service. Apple’s brief patch notes say simply that, “This update resolves an issue that could prevent auto-imported Photo Stream images from being displayed in the library after your Photo Stream hits 1,000 images.”
Apple also linked to a KnowledgeBase article for the update, but as of this writing, that article has not yet been published.
The update is a 551MB download through Software Update in Lion. Once the KBase article linked above goes live, there is likely to be a standalone download link included.