Not that big news this weekly development update.
Earlier today, they released a new beta build for those players enrolled in the optional Sim Update 15 (SU_15) public test. As you can read about the release notes of Sim Update 15 Beta build v1.37.4.0.
And also, they released an unrelated small update to players on both the regular release build and the SU_15 beta build today. This patch contains updated navdata for AIRAC cycle 2402 and the first round of improved airports from community-sourced fixes using the World Hub tool! Simmers can expect to see regular updates to airports from the World Hub in the coming weeks and months.
Last but certainly not least, some info about the Dune Expansion. But i recommend you to read it here further. And of course with some new sim products via the Marketplace. And have a look to also many new products on simMarket.