We previously reported on the old BotCon site showing signs of life, this was no mistake as today we have news from the official site that they are planning to bring back the show next year, in 2021. What's not clear is who is running it, and where it will be. Far as we can tell, this will not appear be an official Hasbro show as before. But that may be yet to be announced by BC Productions. See the quote from the site below for more info:

What's easy to forget is BotCon didn't really die, it basically faded away. The last few years were barely attended, as the boondoggle over the growing cost of the toys became a point of dismay for many fans who could not afford them, or simply did not like them. Ultimately, Hasbro stepped in to integrate BotCon as part of HasCon, to an even further decline in interest. What is coming back is TBA, and while I hope BotCon can bring back the joy of the early years. With so many other conventions going on these days, it remains to be seen if fans will engage like they did when there was no other show around.
I'm so hoping for BotCon in the west coast... BotCon Las Vegas would be awesome.