This is a cool idea: The August issue of Otona No Kagaku (Japanese for Adult Of Science) will be a synth themed edition called the Synthesizer Chronicle. It will feature interviews from Ryuichi Sakamoto, Tomita and Fumitaka Anzai.
With the magazine comes the SX 150 Gakken Analog Synthesizer – which appears to be a basic battery-powered synth toy!
Last year, the magazine published a theremin issue.
If anybody knows anything about availability of this magazine outside of Japan, let us know in the comments!