Hello , I have my btc in trezor since a year or so , do I need to do with them something before 1 of August? Thanks folks
AFAIK, you can export your private keys if you use your trezor in electrum (not verified, tough i think i'm correct). In this case, you don't have to do anything, just wait it out and see if there's a fork. If there is a fork, and trezor decides only to support one of the two coins, you can export your private keys to a wallet that supports both (or at least, to a wallet that supports the other fork).
If there is no fork, there is no problem anyways.
Alternatively you could use a paper wallet, the only reason I opted out was for every transaction you need to use entire balance, but upto you.
Technically, it is possible to spend only part of the unspent outputs that are spendable from your paper wallet, however they are not recommanded.
It's possible to use the private key from your paper wallet to create and sign a transaction spending only a part of your balance on an offline machine, the move it to an online machine using a usbstick and broadcast it from there... The downside to this setup is that your public key will also be broadcasted to the network...