Yes, this curator hasn't seen any additions lately. But is that a bad thing? The group administrator's activity in checking games hasn't diminished, it's quite the opposite. Poorly working games really are rare these days, and the few broken ones are often fixed shortly.

In fact, in the last week 3 games have been removed from the curator, including the first entry ever added to it:

http://store.steampowered.com/app/298790 (Reference)

http://store.steampowered.com/app/360650 (Reference)

http://store.steampowered.com/app/396800

That said, this is a good opportunity to remind that the group always looks for detailed reports on games that work poorly on Linux, so please contribute!