King Daniel wrote:
Not in this case. The idea of an invisible starship was new in "Balance of Terror", it certainly wasn't depicted as just the latest part of an ongoing evolution of stealth technology and countermeasures.
It could still be both. We already saw in Enterprise technology used that could penetrate Romulan and Suliban cloaks (albeit not the cloak used on the Bird of Prey). If such sensor technology became part of the standard set of sensors on ships in the mid-22nd century, and there were no major jumps in cloaking technology for the next century, then the idea of a successful invisibility cloak would be alarmingly new by the mid-23rd century.