[yurymik]

It seems to be a third book in a series. Do you need to read Singularity Sky and Iron Sunrise before this one?

[egypturnash]

No, it is not related to those two books except insofar as they all involved writing around The Singularity.

[pinewurst]

Stross has explicitly written that he will not write a sequel to those two books.

[winReInstall]

They came before and were better in all aspects.