i hear the only difference is the feedback assistant ? PB not worth the install wait ?
If history is any indication, Yosemite will be released in Oct. That's 11 weeks away. Assuming a 2-3 week update schedule, developer preview is set to receive 3-5 updates. That's not an insignificant amount.
Apple hasn't commented on how often the beta will be updated. It may be once a month, which means 2-3 updates before release.
The only thing I see the beta having for it is that you will be able to convert it to production, whereas the developer preview will need to be uninstalled.