FYI, just posted today - the Zeiss Biogon T* 2,8/25 ZM lens review
"A simply stunning lens by any measure - capable of extremely high resolution, with practically no distortion and fabulous rendering. This focal length is about as wide as you can go without resorting to an external viewfinder on most bodies and makes a great 35mm equivalent on the M8."
In case you missed it, these other ZMs were previously reviewed:
Zeiss Biogon T* 2/35 ZM
Zeiss C Sonnar T* 1,5/50 ZM
More on the way...