Pretty sure WIN News Tasmania became a composite hour long bulletin (with local, state, national and international stories) at 6pm when Nine News expanded to an hour in Late 2013/Early 2014.
Then the affiliation switch happened which resulted in WIN News Tasmania moving to 5.30pm for a couple of months. Same composite format, but with Ten stories instead of Nine’s for national and international news.
Presumably due to poor ratings, the weeknight editions of WIN News Tasmania became a half hour local bulletin (similar in format as those received in other markets) at 6pm a few months later. Although the composite 5.30pm hour somehow managed to continue on weekends until the 2018 cutbacks and centralisation of presentation to Wollongong.
Seven axed Today Tonight on the East Coast in February 2014 - Southern Cross News Tasmania would’ve expanded to a full hour then.
Going by their profile on Twitter, WIN News Canberra currently has five reporters: Caitlyn Chambers, Emma Groves, Eliza Watson Laura Gardiner and Natasha McFarlane.
I’m pretty sure the Illawarra has a similar number of reporters for their edition of WIN News, don’t know whether some of the smaller regions would have five though!