"Last" or "latest"? Those are rather different.
I speculate OP wanted to put focus on their chosen detail in the title...
For the "last/latest", it is the result of trying to trim the title enough to enter in the size limited title box and then I didn't notice the typo.
At first I wanted to put the 3.5/3.6 model number because "latest" is not clear and time dependant but it was too long then.
Funnily, in Galician there is a distinction between "último" (most recent) and "derradeiro" (final). I would have guessed that it would be the same in Portuguese, given how closely related the two languages are.