There are some newly opened sims on the main grid.

To be exact, these are:

• T-Online Island and T-Online Beach. T-Online is one of the biggest German ISPs, on their island you can find an in world presence of this company open for all, with a modern building, meeting rooms and so on, while T-Online Beach is mostly a beach, open for all.
• Frankfurt am Main has opened an in world presence, too. It’s consisting of five sims at the moment, Frankfurt West, Frankfurt City, Frankfurt Nord Ost, Frankfurt Ost and Frankfurt Ostend. Not all of them are already finished, you can see most at Frankfurt West and Frankfurt City so far. The initiative to open such sims was made by some private men. It’s basically an in world rebuild of some popular sights of the city. Update: it’s the first official presence of a German city in Second Life.
• The VHS Goslar has opened an in world presence, too. I wonder where there’s the sense of it, though. But then again, why not, enabling new market reach and such, for sure organizations like that can profit from a voice enabled main grid, when it’s going to be available.