http://it.arxiv.org/new#ids_2006

Change to arXiv identifiers: The current form of arXiv identifiers (e.g. arXiv:math.DG/0307245) permits only 999 papers per month in any archive -- in October of this year we got to paper 989 in math, just 11 short of difficulty. We thus have an urgent need to extend the maximum number of submissions that can be handled in a month. We will certainly exceed 999 papers in some months for some archives next year.

To address this issue (and several others), we are going to change the format of identifiers for new papers starting on 1 January 2007 to use the form arXiv:0701.0001.

 Интересно было бы посмотреть динамику развития публикаций в предпринтах

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