We're in the 'quiet period', I suppose. I don't expect anything utterly groundbreaking to happen until 5.3. 5.1 and 5.2 will be laying the groundwork for the finale of Shadowbringers and then 5.4 and 5.5 will be build up for 6.0. There will be intriguing elements across the board but the payoff will take some time to manifest, especially since each patch moves the story forward by a bit then ends with a teaser. That's how I see it, at any rate.
