From the OxfordDictionaries.com Blog:
Want to describe how attractive you think someone is? This update sees the inclusion of the antonyms hawt (an informal respelling of hot). That person may even be your man crush (a ‘typically non-sexual liking or admiration felt by one man for another’) or someone who is your catnip; the word has long been another name for the catmint, but its effect on cats has led to the figurative sense ‘someone or something that is very attractive or appealing to a particular person or group’.
The world of technology has, unsurprisingly, provided new vocabulary for this quarter’s update – including camel case, SD card, soft key, digital footprint, keyboard warrior, and a new sense of fire hose (or firehose): no longer simply a hosepipe used to extinguish fires, this word also refers (in computing) to ‘an unfiltered, real-time stream of data produced by a social media website or other online service’.
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While the Oxford Dictionaries and Oxford English Dictionary are both published by the Oxford U. Press they are different publications and have different criteria for words to be added. You can learn about the differences here.