In iOS 6 the Reading List features has the ability to cache pages for offline viewing. I'd like to know how long these pages stay in the ever-growing cache of articles. Since I use this feature quite a lot I wondered if I have to delete this cache every so and so often. That's not very practical though since it will also delete the cached copies of unread items.
I know that Mobile Safari keeps its history only for 7 days, so I assumed that there might be a similar mechanism that clears out read items from the Reading List cache. However, I found an item that is probably 9 days old today while I turned on Airplane Mode and browsed through the list of all items only to find old ones that still have their data in the cache.
So in short: does anyone know if (and when) this cache clears read items?