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
thatfuctions can now take up to 32 parameters "by default", which implies that perhaps this can be changed with a
tuningparameter or some such.  Or failing that, does anyone know if this limit is going to be increased again in the
7.4release?  Any help is appreciated. 

Thanks,

Jon