Emma, when exactly is the new update?
I'm hoping this will synchronise with my phonecalls/texts.
Also, will I need to reinstall the app?
It very much depends on the system you're using
iOS update is in review by them, when they ok it, it should update automatically but iOS will still limit us to call logs and manual searching only.
Android "Lite" update is released and on the playstore but it will not auto update you'd need to redownload
Android "Full" update HOPEFULLY next week, will require to uninstall and reinstall using the new link when its available