Update, August 3rd, 20:12 UTC
Bitcoin Cash/Bcash (BCH) Wallet is back online in TREZOR Beta Wallet.
Claim BCH tool was also brought back online.
While we managed to bring the server back online, we cannot guarantee its stability yet. Therefore, we recommend you to send your BCH coins to a third-party wallet, such as an exchange.
If you have not claimed your BCH yet, you may claim them directly to a third-party wallet.
We will continue working on the backend, to improve its stability. This situation does not affect backend of any other coins supported by TREZOR Wallet.
We apologize for the delay and thank you for your patience.
Bittrex just today allowed deposits on their wallet BCASH wallet as well. They are no longer under maintenance and offline. Time to deposit and dump BCASH for BTC?