Trezor Crypto Wallet Will Not Support Bitcoin Cash Split.
📍Will there be a coin split?
Most likely, yes, new Bitcoin Cash Node coins will be created by the competing hard fork. When the hard fork occurs on November 15, wallets and exchanges supporting the new network will take a snapshot of user balances. The new Bitcoin Cash Node network will mint coins equivalent to the number of BCH (i.e. BCHABC) held in those wallets and begin broadcasting and handling transactions.
📍What do I need to do to participate in the Bitcoin Cash fork?
SatoshiLabs will not be participating in the fork until a decision is made by the community. If you wish to take part in the fork, you should transfer your BCH balance to another wallet which is supporting the coin split, to make sure you receive any coins resulting from the hard fork.
https://blog.trezor.io/what-trezor-users-need-to-know-about-the-bitcoin-cash-fork-a21ceafdc03e