Which major dictionary publisher's logo underwent a controversial redesign in 2014 that included a linguistic symbol representing the evolution of language?

Corporate logos are powerful visual elements that often incorporate subtle linguistic features to enhance brand recognition and convey specific messages. From phonetic symbolism to multilingual considerations, language experts play a crucial role in logo development. This trivia question explores how linguistics intersects with corporate branding in one famous language-based logo redesign.

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Oxford University Press, which added the '@' symbol to represent digital language evolution
Merriam-Webster, which incorporated an infinity symbol to represent endless language growth
Collins Dictionary, which added a speech bubble containing multiple language scripts
Dictionary.com, which included a lambda (λ) symbol to represent linguistic transformation