I'm going to be annoying here and make a fuss over future posts since I'm seeing two issues and both are fairly big. Both have been reported via Feedback recently:
1 - If one creates a future post via importing with the WordPress XML importer or the Movable Type importer, then it doesn't show up in the blog at all. For example, this post never came up until I edited it and republished it again. Recently, I've been doing it for most of the Posts within that blog since they're timed to go up at midnight and 1pm US eastern time.
Minor note for that one. The post does show up in the Scheduled Posts list as being due. The time listed though increases as we get further away from the schedule post time though.
2 - If you do manually republish a post, then it shows up early in the tag system. Please note the post labeled "the Front yard" with a date of "-1 years ago."