The commercial licence only applies up to Juce version 3 – does that mean Ill need to renew it in the future?
No, the commercial licence never expires, so you won’t have to renew it if you continue using a version of Juce before V3. In fact, I’ve got no plans currently for a V3 – the clause in the licence is only there as a precaution in case I decide to make a major change to the library at some point in the future.