When do silent updates usually occur?

[unwise]

Hi there,

Apologies if this exists somewhere already.

Is there a pattern to silent hardware releases / refresh ? In this case looking at the Macbook Retina but interested across the board.

Cheers.

 

[cruisin]

Aside from https://buyersguide.macrumors.com//#Mac and checking the average days, I can't think of anything.

 

[unwise]

Thanks cruisin.

I thought there may be a pattern around the day of the week, or similar. Cheers.