The special edition hardcovers will be available through all retail channels.
Can you say what channels these are specifically for the UK and Europe? Also hoping that Brexit won't affect shipping to the UK if the distributor is solely EU based. I had some trouble ordering the playtest book through Amazon last time and ended up having to cancel my order due to massive delays and uncertainty if it was an official Paizo seller. I can't wait to get my hands on these books but I can't afford to pay the import tax for American products.