Several weeks of future posts have just released on my blog. I've alerted the developers, but wanted to let others know that this is a known issue and hopefully something will be done to resolve it soon.
If your blog posts set to publish on your blog in the future have released, here are your choices.
1. Do nothing. They are already in your feeds, have sent out trackbacks and pings, and search engines may have already indexed the information. Not much more you can tell people.
2. Tell your readers this is an error and that it is being looked at. Until we know how WordPress.com is going to resolve this issue, which might include pulling the articles back into the post queue and out of the public eye until their timestamp arrives properly, it will serve to warn readers if the posts disappear.
3. Put the posts in draft status. Edit the posts and change their status to draft. This will remove them from the public view, but the pings and trackbacks cannot be "turned off" or removed.
If you, like me, use the future posts feature to schedule posts ahead of time so you can work on other projects, and you don't have the time to write new posts, just let them sit there or write a note for your readers explaining the situation and tell them not to expect anything new while you work on other projects. They are usually understanding.
Hopefully, this will be resolved soon.