It is indeed. Massimiliano released some unofficial bundles to the list for previous versions (not for 1.99.1). Just search here for HDPI and you should find it. There are some rendering glitches, though.
I expect to look into this any time now, but I can't promise anything.
On Mon, Jan 13, 2014 at 10:21 AM, Cavingdeep
<address@hidden> wrote:
Because the rendering is really horrible in a retina Mac!