A new Kowa lens is coming! According to the latest rumors from 43rumors, Kowa will announce the new 90mm f/2.5 macro MFT lens at the Cp+ show.
This will be a telephoto macro of 90 mm (180 mm in equivalent) lens, so if you want a longer macro, Kowa 90 mm f / 2.5 Macro seems to be a nice choice.
Kowa MFT lenses on Amazon.
Source: 43rumors