When the next Penn South lottery is announced, I would think some Penn South resident will mention it on CYB.
If your interested in other Mitchell Lama housing outside of Chelsea, the city has a list of open waiting list buildings at: http://www.nyc.gov/html/hpd/download...ting-Lists.pdf
Some notes-- you may not want to look at the rental housing, some of those buildings will be opting out of the Mitchell Lama program in the future and not all who opt out will have tenants move to a rent stablizied status ( if you do decide to look at rentals you should research this issue thoroughly before sending in the money for an application).
Stryckers Bay, Goddard Riverside and Columbus Park Towers are really nice buildings on the upper west side with open lists, however the wait will be VERY long before getting an apartment at any of them.
This is a list of all City Mitchell Lama, both open and closed
In talking to HPD I got the feeling that when a closed unit is accepting new applicants it is done through a lottery (announced through newspaper ads) and not through being added to the open lists list.
Releted Management maintains rental affordible housing lists for new and existing developments:
212 987 6445
The existing buildings list is now closed but I think it reopens on a regular basis, check it out every couple of months.