On 21 September 2007, the sixth edition appeared. The dictionary now included 600,000 words, phrases, and definitions, covering global English-speaking regions and 2500 new words and meanings from Oxford Dictionaries and Oxford English Corpus. As previously, the vocabulary included entries in general English from 1700 to the present day and in earlier major literary works. The dictionary included 80,000 quotations illustrating the use of words, thousands of newly discovered antedatings based on the continuing research for the OED, 2,500 new words and senses, thousands of antedatings of existing words from Oxford English Dictionary and Oxford English Corpus, many new quotations from then-recent authors, and a complete review of spelling forms and defining vocabulary.