As per 48.4 release notes,
Meteor Swarm's cooldown has been raised to 6 seconds for Sorcerers, 9 seconds for Wizards.
Multivial's cooldown has been raised to 9 seconds.
Just tested on live, Multivial's cooldown is raised to 9 seconds as advertised, while Meteor Swarm's cooldown is only raised to 4 seconds.
Is this an effort to stop people from playing alchemist?
Please reconsider reduce Multivial's cooldown.