Is there a way to pass more than 32 parameters to a plpgsql function?

Does anyone know of a way to pass more than 32 parameters to a plpgsql function? The 7.3 release documentation states that fuctions can now take up to 32 parameters "by default", which implies that perhaps this can be changed with a tuning parameter or some such. Or failing that, does anyone know if this limit is going to be increased again in the 7.4 release? Any help is appreciated.

Thanks,

Jon