Microsoft will stop supporting Skype 7 on September 1st. For JAWS users, it is anticipated that Skye 7.4 will no longer connect to the service. JAWS users will need to upgrade to a newer version and this newer version will have a different interface. Freedom Scientific will release JAWS 2018 that will be compatible with Skype 8.
Freedom Scientific suggests that JAWS users read the Hotkeys for Skype 8 prior to upgrading.
For details, read Scientific Freedom's Skype Blog here.