Buying something is the result of a sale contract : buyer must pay according to the rules of the contract and the seller must deliver what is in the contract. If not, the contract is broken and customers must be compensated.
If you'd like to request a refund of a Collector's Edition as a result of this, then I'd recommend contacting
Larian support.
I'm thinking that from a marketing perspective Larian should probably just have said they were moving the PC release date to 6 August and making the 72 hour early access to the full game rather than just act 1. That would have been functionally almost identical to just releasing on 3 August (except that people would probably have been able to continue to get free upgrades to Digital Deluxe up to 6 August rather than, presumably, 3 August) and some folk might have found it easier to swallow.
