Plotly animations are coming along gradually, and Reactive Vega may be something to look at. Unrelated to these, I've been exploring real-time visualizations (and more in focus, real-time configurability) with D3 e.g. here: http://bl.ocks.org/monfera/35be5626a47110312c35 but Mike Bostock and many of others have technical notes on updating charts, like here: https://bost.ocks.org/mike/path/