http://blog.sony.com/reader-store-gi...ytime-anywhere
They just announced it on Facebook.
Sounds like the Android app is getting an update as well. Which is probably a good thing, I thought about downloading it, but the reviews as of last week looked pretty bad, so I didn't bother. I'll have to go check again next time I'm in app downloading mode.
It may be rather late to compete with Amazon and B&N and Kobo. Still, as they say, better late than never!