Well, just to understand the "swap" correctly: The eBTC are in my wallet (= on the blockchain), so nobody can actually take them and sawp them for a new token. So I guess the swap in this case means we will all be credited with new tokens (while the old ones will of course remain on the blockchain), so the effect will be similar to a hard fork, correct? It then remains to be seen what each token will be worth. Is my thinking correct?
Yes, your original eBTC tokens will remain in your wallet and an equal amount of new ones will be added.
You will just need to use your wallet's option to "add a custom token" (once they publish it the new smart contract address) to be able to see the new tokens.
Please correct me if I'm wrong on any of that.