At the Go/No-Go meeting (you can read the meeting minutes here), it was decided to slip Fedora 20 Beta release by one week due to unresolved blocker bugs not being fixed by the time of meeting.

Due to constrained schedule, shorter slip was considered but with limited
QA resources availability, it was decided to slip for a full week. FESCo
will be contacted for further schedule adjustments. Beta release is now
planned for November 12.

The next Go/No-Go meeting is on Thursday, Nov 07, the same time in
#fedora-meeting-2 channel.