Hello"
There wont be an EdgeCMS, because of Name changes:
http://www.sitecrafting.com/edgecmsvs.
http://www.edgecms.org/vs.
http://www.platformrad.org/Well, besides the name - EdgeCMS / platformRAD has _nothing_ to do with websitebaker, only the WebsiteBaker founder Ryan (he retired just after WebsiteBaker 2.7 and wasn't in active development of WB since version 2.6.7) makes here some new CMS.
WebsiteBaker will stay websitebaker. I can't give you a Roadmap because Iam not in the position to decide / publish it and not in the knowledge to give you valid information, but WebsiteBaker will be supported in future.
There will be WB 2.x and WB 3.x.
Some time (perhaps even that year) both development branches will be splitted, so parallel working on 2.x and 3.x is possible. But WB 2.x will be just "finished", so better security, meeting Coding Guidelines / Standards, fixing and so on. Just to make it even better.
WB 3.x will be some new coded websitebaker, but mostly the difference between 2.x and 3.x "source code readers" will see, not that much the user.
WebsiteBaker is WebsiteBaker and will stay websitebaker, nobody needs a new Joomla / Silverstripe / ModX / Wordpress.
EdgeCMS or how it will be called after paying a found for false name rights is as different to WebsiteBaker as Joomla, Typo3 or Drupal.
Yours Michael