Two Latin American broadcasters have made changes to their on-air presentation recently.
Brazil: This past week, the local newscasts on the SBT owned-and-operated stations (Porto Alegre, Rio de Janeiro, Nova Friburgo, Belém, Brasília, Ribeirão Preto and Jaú) relaunched with a new look in line with the one used on SBT Brasil (the main national newscast) and the morning newscast Primeiro Impacto. While the graphics are the exact same, the local newscasts use different music.
Here's the intro and headlines for the first edition of SBT Rio Grande (Porto Alegre) with the new look - the graphics (except for the name) and music are the exact same on all the other stations. Note that SBT Rio Grande still uses the 2016 graphics to introduce the sponsorship plugs, at least in this edition:
Prior to SBT Brasil, some SBT-owned stations also run evening newscasts, namely the ones in Nova Friburgo, Porto Alegre, and Brasilia (SBT São Paulo gets an "early edition" of SBT Brasil in lieu of a local evening newscast). Here's the intro to the Nova Friburgo version, SBT Cidade; note the different music.
While local morning newscasts on SBT-owned stations were a lot more common a few years back, nowadays only the station in Jaú has one. The music is the same as the midday version (the first video in this post).
Personally, I prefer the 2016 graphics and music to this, but I have a hunch as to why SBT did it. The network's been on a consolidation streak lately (the various national news programs on SBT all had different looks and graphics until 2016 or so,) so this is may be an attempt to bring the local newscasts completely in line with the national branding. Also, by leaving out any mention or hint of locality in the local intros barring the name (as compared to the map in the 2016 version,) it's easier for the affiliate stations of SBT to adopt the new look as well. Unlike Globo, whose affiliates share the same look and feel as their O&Os, SBT's are a smorgasbord of different looks (this montage is from 2018 - the affiliate stations start at 1:11 in the video):
Also unlike Globo and Rede Record, whenever an SBT affiliate wanted to use something similar to the O&O look, they would get a somewhat pared-down version of the O&O package. Note the difference between the "full-featured" version used on the O&Os (except for Ribeirão Preto [SBT Verdade], which used something different) and the bare-bones pared down version (here's the one used by affiliate TV Amazônia in Amapá - the newsroom shot at the end is totally generic, by the way, it's the same on all the affiliates that use this package).
Chile: After hinting at the relaunch when they debuted their new multipurpose studio back in January, Mega recently revived the name Meganoticias for their newscasts, putting the Ahora Noticias branding to bed after six years. The music, while different, carries over the signature of the Ahora Noticias theme.
Here's the sponsorship plug and intro to the first edition of Meganoticias Prime, the main evening newscast on Mega: