Anyone that purchases any product gets free upgrades for 30 days, so you would get any updates in that timeframe.
Suites are bundles of products, so if we add products, we usually will adjust the price accordingly and would not change the version number of the suite itself. So there won't likely be any updates or upgrades for suite owners that are unpaid for. In other words either way you would save money by buying during the launch discount period and waiting will cost more to get the same tools.