The new Store client is XML-based and is open source (the code is here, if you want to lend a hand), and you can read all about it here:
Of course, there's so much more to a Store and ecosystem than just the client and UI. Not least:
- a secure way for developers to upload new apps and updates
- hosting costs and sufficient bandwidth to handle the volume of downloads
- significant penetration into the active installed base of Symbian users
Plus there's the still unsolved issue of how anything remotely low level could be digitally signed after this week.
Still oak trees and small beginnings etc. Perhaps, if you're a developer or beta tester by nature, you could lend the project a hand?
PS. Also note my existing Curated Application Store and Curated Games Store, currently linking to a mix of Nokia Store and AAS server content. This is also updated regularly.