A source tells ChargerLab that Apple informed partners of the change last month:
Apple announced the packaging and MFi logo changes to their already certified manufacturers on February 9th. Now, the manufacturers will have 90 days to update their packagings and MFi logos. There are relevant guidelines available to download from the MFi portal: Marketing Materials-MFi Identity Guidelines February 2018.pdf to help assist with all the changes.
The new logos, introduced at the beginning of February, are mandatory for manufacturers to adopt within the next 90 days.