The first major guest announced is Gregg Berger, who did the original Grimlock (and Outback) in Gen1.
http://www.botcon.com/BotCon09/guests09.cfm

And the full attendee sets have almost all sold out.

The Thursday Tour is now Sold Out!

As of today (March 30), we have sold 87% of the BotCon 2009 Wings of Honor sets. We have also cleared all of the people on the waiting list for the non- attending Iacon packages. Everyone who was on the wait list is now getting a set.

We will be allocating to the Iacon wait list each week (provided that there is any quantity left) as we get closer but, we must maintain sets for people who decide to come to BotCon at the last minute.

If you want to be on the Iacon wait list, please use the registration form and write wait list on the top.

If you are coming and have not registered yet, you need to do so very soon as when we run out, we will have to use a substitute package from the 2005 convention, and even those are now in short supply. </SPAN></SPAN>