I chose not to use it. Aluminium leeches.
Some reports have stated it increases the chances of alzheimer's disease, but your liver will probably die before then :)
If you choose to use WB-06, always ferment @ 20C+. Below that, it'll taste like shit :)
I found Wyeast Weihen & Bav do this too.
I'm planning to add some mixed berries & manuka honey to this summers wheats.
Maybe some Nelson Sauvin towards the end too.