The Leica-designed 45mm lens for u4/3’s doesn’t get much respect in the online reviews, but I think it does quite fine for portraits. Look at the detail on the calf’s face, while the background is nicely blurred. It’s not the most creamy bokeh ever, but quite decent I would say. And full AF is available with this lens.
The next lens due out is the the 25mm f1.4. It’s a little too close to the 20mm f1.7 to be of much interest to me, but then again I will have to see the performance. The 20mm has set a high bar to follow.