Wait until about:config is supported too ? These preview builds have been available for months, not just a couple of days. Nothing I or my co-workers can actu

Wait until about:config is supported too ? These preview builds have been available for months, not just a couple of days. Nothing I or my co-workers can actually test yet in them. No official statement about add-on support which should be at the forefront of development in any Firefox version, the best we get is vague replies about it coming later.