We’re seeing a lot of interest in Google Summer of Code, which is fantastic. Student applications officially begin April 22 at 19:00 UTC according to the schedule. Get yourself ready to apply by forking and downloading Cesium from GitHub, and following the Contributor’s Guide to set up a development environment. Start exploring the code in general, and figure out how to build the sample Cesium apps.
If you have particular areas of interest, such as the 3D engine or the UI, start looking at how existing code is implemented. We will likely favor applications that show the student has understood the code and is already making good progress, or at least good plans for their chosen feature.
Here is the official Summer of Code schedule: (scroll it down)
Here is Cesium’s page on Summer of Code: (not open for applications until April 22).