she's gone - настоящее с идеоматическим выражением "gone"

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'Is gone' is a present tense idiomatic expression with the verb to be and gone is the past participle of go used as an adjective. 'Was gone' and 'will be gone' also exist.

Read more: http://wiki.answers.com/Q/Discuss:What_is_the_tense_in_grammar_of_'She_is_gone'#ixzz1T8vsRN8R
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present continuous tense может быть использован для передачи будущего времени, к примеру в фразе "I'm leaving tomorrow".

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http://www.englishclub.com/grammar/verb-tenses_present-continuous_u.htm

Present continuous tense for the future

We can also use the present continuous tense to talk about the future - if we add a future word!! We must add (or understand from the context) a future word. "Future words" include, for example, tomorrow, next year, in June, at Christmas etc. We only use the present continuous tense to talk about the future when we have planned to do something before we speak. We have already made a decision and a plan before speaking.
I am taking my exam next month.