Wiki's source was catholic digest, 5/10/2013
It is still a sin, since it violates the "thou shall not kill" commandment and a whole bunch of other derivative ideas.
Fr Byron mentions that some of the practices around suicides have changed - they now get church burials, etc - but the basic premise has not changed - it is a forbidden act and a grave sin. He does not come right out and say you don't go to hell, but he rather dances around the point.
In catholicism (for those who don't know) you confess your sins to the priest, get assigned pennance and are forgiven. Pennance, for the rather vanilla sins I committed as a catholic, usually amounted to a bunch of hail marys and our fathers. Once you did that you were in a state of grace. That is, a state of being sin free. Until your next sin. The whole idea is to die in a state of grace so you could get into heaven.
Suicide is problematic for the catholic on a secondary basis because it is a sin you will not get a chance to repent. So, on that theory, it is a mortal sin (murder) for which there is no hope of grace, which should land the perpetrator in hell.
So, Boots, you are right. According to that priest, you do not necessarily have a one-way ticket to the Hot Place. But you are incorrect in that the basic view of suicide - a mortal sin - has not changed.