Some educative information from QRL THE QUANTUM RESISTANT LEDGER

It's going to affect Bitcoin

Bitcoin's developers have already planned for this

Bitcoin will just hard/softfork

If they can break SHA_256, we’ll upgrade to SHA_384

But if you don’t reuse addresses, you’re safe because BTC only exposes the hash of your public key if you have never transferred BTC from that address

Quantum computing is a long ways away, there's no need to bother

If ECDSA will be broken, banks and the whole internet is broken. Blockchain is the least we’ll need to worry about then.

More info here.