Palm device and Cobalt Questions

Just bought a new Palm TX, so I’m trying to come up to speed on all the stuff that’s happened in Palm World while I’ve been stuck with my now obsolete Clie NX-60.
[ol]
[li]What’s the best forum/site for keeping up to date on Palm news?[/li][li]What’s the best site for SW? Palmgear used to be, way back when, but they no longer carry freeware, etc.[/li][li]What’s all this about Cobalt/Palm OS 6? My TX came with 5.4.[/li][/ol]