RingCT is not mandatory until September 2017. Compiled v0.10.1 last night, and V0313 experimental Trezor still saw the proper balance with the new node. Have not tested sending a new transaction yet. Without the guru, we will probably need to wait until 2017-01-10 before we know the truth.
Be sure you have tested the conversion of 24 BIP 39 seed words to Electrum seed words to recover without the need for a Trezor. Test the recovery process in advance. I'm sticking with V0313 with a simplewallet --hardware-wallet 0 until judgement time.
Read NoodleDoodle's comments here, the Monero H/W wallet guru.
The edit dEBRUYNE recommended below to Monero v0.10.1 source code appears to breathe new life into Trezor V0313 Monero firmware. This has the potential to be a stop gap solution that might last until September 2017.
10 January 2017 Update: HARD FORK DEFINITELY BROKE TREZOR V0313 FUNCTIONALITY.
[4NoT0K]: refresh
Starting refresh...
Error: refresh failed: refresh error: block parse error. Blocks received: 0
Error: block parse error Blocks received: 0
Error: block parse error Blocks received: 0
Error: block parse error Blocks received: 0
Error: block parse error Blocks received: 0