Hi,
It already leaked here and there: The update to version 2.2.1 is ready and can be downloaded at http://www.fruitchess.com
Besides some bugfixes the main feature of this update is the support of the Nalimov Endgame Tablebases. I don't think that has a big effect in playing strength but it is definitely useful for analysis. For all details of the update please check: http://www.fruitchess.com
The bad news for Linux user is that the update is not yet available but the good news is that it will also include a new compile of Fruit which is considerably faster than version 2.2.
Now we offer also a trial version of Fruit 2.2.1 for 14 days. It is not restricted in any way besides a nag screen at each start.
Joachim