Whats new in Python 3: concurrent-futures example error?

[Paddy]

I just noted the example here:
http://docs.python.org/dev/whatsnew/3.2.html#pep-3148-the-concurrent-futures-module

import concurrent.futures, shutil
with concurrent.futures.ThreadPoolExecutor(max_workers=4) as e:
    e.submit(shutil.copy, 'src1.txt', 'dest1.txt')
    e.submit(shutil.copy, 'src2.txt', 'dest2.txt')
    e.submit(shutil.copy, 'src3.txt', 'dest3.txt')
    e.submit(shutil.copy, 'src3.txt', 'dest4.txt')

Should the last line show a copy of src4.txt rather than src3.txt
going to dest4.txt?

- Paddy.
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