Fiji 2.0.0-pre-7 (built on ImageJ 2.0.0-rc-68) was released yesterday, and uploaded to the Java-8 update site just now. I will be largely AFK for the next 5+ days, but if something is catastrophically broken, do try to let me know as described above.
@ctrueden@etarena it seems like script files in ./plugins/ are not recognized any more after the update. For example, there no Find Jar for Class command in the menu. See also this forum post and others.