This article states that after a firmware update the issue is resolved. What bothers me is that it might take them more then 15 seconds and special firmware to crack the Trezor.

“This attack vector was fixed in firmware 1.5.2,” explains the Trezor employee Xbach. The claims in the post are not 100% correct. While it is true that this vulnerability affects devices with firmware versions earlier than 1.5.2, it was fixed in the latest update. Moreover, an attacker would need more than 15 seconds: they need to be physically present and a special firmware.”

Source: https://news.bitcoin.com/trezor-calls-an-article-that-claims-to-break-bitcoin-hardware-wallets-fud/

Do you think they might go for a more secure chip in the next models?