Looking at the To: list, I'd say it's possible this is the list of people officially being offered a buyout. (Of course, I've already turned that down, but...)
Earlier today I got an email addressed to the people being offered for detail to other offices, which now includes neither Howard nor Keith. Howard has sort-of firm support for about half of the time he needs to cover: I just got confirmation of 40%. Keith, I think, has probably covered enough of his salary to be safe. But again, Ed's not using any sort of uniform criteria for any of this.
Update: Tim (my supervisor) confirms that the meeting is about the buyout. Tim is happy: he's been put on the list. Howard is on the list, too, but like me is not interested. He's old enough to take it but his pension would be reduced--and he's got a kid in college.