they will most probably hand over the cheques to bluedart today. i have no sources, i am just noticing the trend for the past several months.
Google does this in India only. I feel that they save a lot in terms of bank interest they get on money, if they delay payments to publishers. They can't get such rates anywhere else in the world, but in India only.
So, it makes sense for them to delay our payments. Anyway, they aren't obliged to make it till 15th of next month.