I first heard this from Ina Steiner's blog and she was referencing a post on the eBay stores board.
Here is the survey question the seller received:
Imagine that eBay updated its current eBay Stores product offering:
In the revised eBay Stores product offering, listings in the Store Inventory Format: Would be shown in Core eBay search results with Buy It Now items and Auction items. Would have lower Insertion Fees than Buy It Now listings depending on the eBay Store product to which you subscribe (see details in table below). Would have the same Final Value Fees as Buy It Now listings.
Imagine eBay made the explained changes to the Store Inventory listing format and also introduced (30 days, Good 'Til Cancelled) listing duration and ($0.30) Insertion Fee to the Buy It Now listing format.
Monthly subscription fee:
Basic Store $24.95 plus .10 store listings in core.
Premium Store $59.95 plus .05 store listings in core
Anchor Store $299.95 plus free store listings in core
Taking into account these changes, would you consider continuing subscribing to one of the eBay Stores if eBay offered them at a reasonable subscription fee?
Now, IMO this is going to happen and they are just trying to fine-tune the details and I think this is a fantastic idea. Look for the large sellers to jump on Anchor Stores immediately.