The current pb14 release will be stabilized until it's deemed ready for release as 1.0. There are so many features we would like to include in it but stability takes priority.
documentation
developers mail list
After 1.0 has been released, the following list of features will be prioritized and implemented.
time based call routing
call groups
extended DID options
pin protected
DISA / callthru access
operator / auto-attendant extension
callable user directory
multiple system interconnection
custom dialplan contexts / snippits
failover providers, multiple trunk providers
built-in TFTP server
built-in DHCP server
call recording
IVR menu creation
“full” voicemail support
personal greetings
message storage