Cochoa,
Those are all very fair questions. We're always adding new features to JFBConnect as well as ensuring that our features continue to work with any changes in Facebook, which do happen periodically. Facebook gives a 90-day window where they announce breaking changes to give developers time to prepare. Right now, there are no known changes that would negatively impact JFBConnect in the near future.
When you subscribe to JFBConnect, it's for a period of 6 or 12 months. During that period, you have access to any new releases that we put out over that timeframe. So, if you subscribe today, install 4.1.2, and in April, we release 4.2, you'll have immediate access to that release. We release a feature update every 3 months or so with 'big' new features, and minor bug-fix releases as necessary in the meantime. Your subscription also entitles you to our excellent support, should any issues arise.
As for discounts, we offer a 10% discount to all users with active subscriptions that want to re-subscribe and extend their existing subscription. Your last subscription expired in May of last year, and therefore would not be eligible for the discount.
Hope that answers your questions,
Alex