Yes it is correct.

I posted a support request bittrex and binance.

binance -  awaiting reply.

bittrex  -  answer

"Julian Yap (Bittrex Support)

Feb 9, 12:37 PST

The "Callisto" ticker CLO (https://forum.ethereumclassic.org/t/january-dev-update-commonwealth/404) proposed Ethereum Classic fork falls under this document with more details:

https://support.bittrex.com/hc/en-us/articles/115001919932

If Bittrex does not explicitly announce support for a promotion or coin feature in our Coin Information page (https://support.bittrex.com/hc/en-us/sections/203283828-Information), it is not supported. If Bittrex decides to support credits of coins for airdrops, giveaways, staking, forks or any other promotion or feature of a coin that provides additional coins, it will be announced and supported publicly.

Please be aware that many airdrops and proposed forks are actually scams.

In the future, if you would like to see a fork supported on Bittrex, encourage the dev team to fill out a New coin submission. Details: https://support.bittrex.com/hc/en-us/articles/360000475411


Best Regards,  "