TRON and Steemit’s development teams will immediately begin working together to bring Steemit and other Steem blockchain based DApps to TRON blockchain

old STEEM token to a new TRON based STEEM token, giveaways to the existing TRX users with the new TRON based STEEM token

I don't think I'm assuming much. Can you interpret these statements from Tron's official announcement any other way?

No, I don't know much about Justin Sun, but certainly significant capital believes in him. As evidenced by Tron's $1.75b market cap, #12 on CMC, and STEEM's uptick since the announcement.