Later editions add sections on surface-mount devices (SMD) and slightly updated op-amp ICs, but to the 10th edition. If you are on a budget, the 10th edition provides a rock-solid foundation.
Op-amps are treated as versatile building blocks. The book covers: Ideal vs. practical op-amp characteristics. Inverting and non-inverting configurations. Active filters and oscillators. Why This Edition Is Preferred Later editions add sections on surface-mount devices (SMD)