The new Kerbal Space Program update is here, and here is it's headline feature: The ability to establish communication networks. You can remote control vehicles, use satellites to scan terrain, and build relay networks so you can science faster and harder.
Improved vehicle controls and a redesigned fuel system are also in this update.
The full patch notes are here, but the gist is that the Loud and Clear update includes the "introduction of CommNet and KerbNet, a rewrite of the Stability Assist System (SAS) that makes your launches more accurate and fuel efficient, an engine change from Unity 5.2 to 5.4, more tweakable options for many parts, a complete fuel system redesign, and much more!"
The update is available through Steam and the Kerbal Space Program Sore and will be coming soon to GOG and other resellers. If you want to buy the game, it's currently on sale on Steam and the Kerbal Space Program Store!