Previous devel, current stable, version was 5.0.x (released on February 27, 2017), see what was new in that release at:

• http://www.kamailio.org/wiki/features/new-in-5.0.x

This is a draft of new features added in devel version, manually updated, thus not always synchronized with what is new in source code repository.

• split from acc module
• https://kamailio.org/docs/modules/devel/modules/acc_diameter.html

• https://kamailio.org/docs/modules/devel/modules/app_sqlang.html

• https://kamailio.org/docs/modules/devel/modules/call_obj.html

• https://kamailio.org/docs/modules/devel/modules/evrexec.html

• https://kamailio.org/docs/modules/devel/modules/ims_diameter_server.html

• https://kamailio.org/docs/modules/devel/modules/keepalive.html

• https://kamailio.org/docs/modules/devel/modules/phonenum.html

• https://kamailio.org/docs/modules/devel/modules/topos_redis.html

• rpc app_lua.api_list command

• support for variables in parameters of cfg functions

• added rpc command db_text.query to do db query

• implemented insert_update() API function

• $dlg_ctx(timeout_route) returns route block name

* added option to use non-locking workers

• added a custom_user_avp parameter, to allow a custom From user via avp

• allow regex in RURI field

• added lcr.load_gws rpc function

• added REDIS-Cluster support

• added pres_has_subscribers() function
• added cseq_offset parameter

• $env(…) - new class of cfg variable to get values for environment variables
• print cfg line for string transformation errors
• new variable - $hdrc(HName) - return the number of headers matching the name with HName

• added flags to disable caller and/or callee PUBLISH

• added direct_reply_to module parameter
• added url module parameter

• apply method_filtering only on initial requests without to-tag

• added $hep(dst_ip) variable to get hep's message destination IP

• the digit terminator is made optional on set_destination

• add support for HEPv3
• add hlog() to send logs to homer

• added is_alphanum(v) function
  • check if a string value contains only digits or alphabetic characters
• added is_alphanumex(tval, eset) function
  • check if tval contains only alphanumeric characters or those from the eset parameter

• new vars - $T(id_index_n) and $T(id_label_n)
  • similar to $T(id_index) and $T(id_label), but if transaction doesn't exist yet, it is created

• new parameter storage - specify the storage type to be used (default is database)

• new variant with subscriber and realm params for check_uri()

• new parameter db_load: enable/disable loading from the database on mod_init
• new parameter db_insert_update: insert into table, update on duplicate key

• ip_free_bind - control if Kamailio should attempt to bind to non local ip
• tcp_reuse_port - reuse tcp sockets

• support for parsing the Call-Info header

• added srv command
  • shortcuts to RPC commands to print sockets, aliases and available RPC commands