RSA is asymmetrical algorithm. They rely on mathematical problems being hard. TrueCrypt use symmetrical - AES Twofish and Serpent and you can even cascade them

RSA is asymmetrical algorithm. They rely on mathematical problems being hard. TrueCrypt use symmetrical - AES Twofish and Serpent and you can even cascade them. RSA and AES have nothing in common. So a mathematical breakthrough in RSA will not help at all with making AES insecure.