I disagree. The principle that evolution proceeds by variation and natural selection has been unchanged for 100 years. The graduated v. punctuated evolution debate, the relative emphasis given to individuals vs. populations, the role of sexual selection, none of these really change the core premise; and one could equally say that the second law was radically altered by the elucidation of the principles of statistical mechanics, gravitation by relativity, and the conservation laws by the discovery of equivalence of mass and energy.
Evolution is to biology as the second law is to thermodynamics.