Iain Banks "The Culture" series is the absolute classic for end-game AI/Human coexistence.  It's more space-opera and far (far!) future than near-term transformative period.  Also very entertaining books.

I think none are all that relevant. But fun and interesting:

The Metamorphosis of Prime Intellect

Accelerando

Friendship is Optimal

Worth the Candle by Alexander Wales

Permutation City by Greg Egan has humans living in a simulation.

Diaspora by Greg Egan features human-like beings living in a virtual world, similar to the digital people described here.