Just upgraded from version 2.6.2 to version 2.6.2a hoping it would fix this problem. In the messages, the tags are not being replaced with the event name or event date.
Well, seeing as we can't replicate an issue with that and no one else has reported that type of issue... there must be something no quite right in your setup. Of course, there are many message areas so you need to be REALLY specific as to which message this is happening on... and if it is a global or event-specific message.