They are going for a standard look for their newest lenses, eg, the 35 f/1.8, 45 f/1.8, 85 f/1.8, and now the macro 90 f/2.8. This is likely to be a darn good lens - though most macro lenses are pretty good.
For macro use, you can't go wrong with any of the Macro lenses. IS can make hand holding them easier, but at 1:1, some sort of support is needed, even if its just bracing yourself well.