Default When are we getting a Dev Edition RUU!?

Phone has been out a while now but still no developer edition RUU. I'm interested in converting by M8 (which is an AT&T variant previously converted to a GPE) to a developer edition version but don't want to do so until the RUU is released. Does anyone know HTC's typical time frame for releasing it? Is there any other fairly simple way to make this conversion from GPE to Developer Edition? Thanks.