No, they run competitions weekly, they are often in “come back” emails to inactive users. Just wait!
Plus they need to be able to change the rules to allow for obvious gamers, you know like people who typed random characters to pad and hasten their posts…
This is an expensive event in prize for them, $800 total, they’ll be wanting to get the most community engagement from this - why declare early? Plenty of members only come here for free stuff then do nothing til the next free stuff (yes I spot them, as does Pei).
So they let it run to the end and they then select.