Ref. 5227 aside, today the closest Patek's catalog gets to a classical Calatrava reference (although modernized in size and other details) is arguably with Ref. 6119, introduced two years ago, or exactly 15 after my beloved 5119. So while the definition itself of "classical" is likely to evolve over time....I'm sure we'll never see a "traditional" offering entirely abandon one of the most historic Patek lines! 
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