Ryan Majidimehr has a short list of updates for Azure Synapse Analytics but it includes a big one:
Azure Synapse Analytics provides built-in R support for Apache Spark. As part of this, data scientists can leverage Azure Synapse Analytics notebooks to write and run their R code. This also includes support for SparkR and SparklyR, which allows users to interact with Spark using familiar Spark or R interfaces. To learn more read the official how-to Use R for Apache Spark with Azure Synapse Analytics (Preview).
That it took this long for R support was a bit weird, but I’m glad it’s there now.