The Hedonistic Imperative - David Pearce. A manifesto-like book on the benefits of biotech, neurotech, and similar technologies to enable humans escape our hedonic treadmill. 

The Transhumanist Reader - Natasha Vita-More, Max More. A now dated book with various chapter contributions by major transhumanist writers.

Crazy Ides for Future Synbio & Bioengineering - Stephen Malina. Lists potential future goals and applications in biotechnology.