Spin the introduction

Entrenched vendors were quick to spin the introduction of Cisco's SN 5428 storage router, which supports both Fibre Channel and IP, as a coup for their protocol.

being a foreigner, I am a little confused about "spin the introduction".

In this case, "introduction" means putting a new product (the router) on the market, offering it for sale. "Spin" has recently become a popular word for talking about something (often, publicly interpreting an event) in a way that isn't quite lying but is distorted so as to favor one's interests. "Putting a spin on it" means interpreting what happened in a way that makes oneself or one's business, government, political party, etc., look good.