As the tradition dictates, most of the requests for talks come after the end of the deadline, as a lot of people have either forgotten or waited until the last possible moment, which is illustrated very well by this graph from last year (the deadline was the 30th of September, 2014):
Because we see that this year the same thing is happening, we’re extending the deadline of the CfP until Sunday (the 4th of October) and we’ll be expecting your submissions 🙂