text: New rumors about a second generation Apple Watch could lead to slower sales of the first version of the high-end wearable device, according to one analyst.
  
  Apple Watch sales have already slowed since an estimated 1 million units were sold in its first weekend, S&P Capital IQ analyst Angelo Zino said in an interview with CNBC. Sales may pick up before the holiday season, but that increase may still disappoint, he said.
  
  Consumers could be holding out for an upgraded version of the device, Zino said. He expects a second version to launch sometime next year.
summary: New rumors about the next Apple Watch could cause slower sales of the first version of the high-end wearable devices, one analyst said.