Now, or soon, from PS Audio. Should be interesting. 
There were no issues installing the software on this end. If there is a spare card available to you, maybe download sunlight on that card and give it a try? That way your original software is preserved in case of incident. 
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The best buy in audio - free.
For state of the art.

Ted has done it again.
Glad to hear of your success! It is indeed an interesting improvement. It appears this is the last upgrade of this unit. It will be interesting to see what the next generation unit brings to the table. 
I'm loving Sunlight!  It's a new DAC.  Hearing snappier transients, purer (leaner?) bass, more cleanness and general transparency, slightly more energy from the upper mids to the highs.

Soundstage came forward about four feet.

I've never had a problem installing an update.