The last time we heard about Next Issue, the all-you-can-read magazine store was launching on Android, with an iOS version said to be coming "soon." Three months later, the startup's made good on its promise: the storefront is now up and running on iOS, with an iPad app going live in the App Store today. If you're not familiar with the way Next Issue works, it's angling to be the Netflix of digital magazines, with a monthly subscription getting you unfettered access to a library of 39 titles. In brief, the fees break down to $10 per month for all the m