I will learn something new, which is one of the flowing or all of them: C# or java, Qt, a functional programming language, multithreading (not "launch a thread" thing but concepts like mutexes, synchronization...) and maybe a functional language.
Oh, and the main thread of my life this year is:
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DWORD WINAPI main_thread(void *lp)
return 0; // termnat.. wait, no