A159 is NOT the replacement of A158, in fact both watch are physically the same. The only difference between them is the price and the country of origin. A159 is more expensive because they are made in Japan. Yes, A159 being the cheapest Japanese made watch you can buy, made in the very same factory in Yamagata as those high end G-shocks and Oceanus。
The Casio A159WE-1 watch has been officially released in Europe. This Vintage model has a classic silver and black design, with colorful accents. Features of the digital model include a stopwatch and an alarm.