"It" has arrived [1]. Finally...
Summary first...
In a nutshell: Support Jolla, support the Mer Project, support the development of Sailfish OS!!! If you are brave enough, even get a Jolla device yourself and find out what it's like.
Impressions then...
First impression... Go and get one yourself. Jolla smartphones are awesome.
Second impression... Wow, there are some bugs here and there that require being fixed. Dropping the idea of giving away Jolla phones for X-mas to family members for now...
Third impression... The Jolla Oy company currently goes through some sort of a death valley [2] that startups regularly face. Let's keep fingers crossed that the company survives. Well, then...
Fourth impression... The hosting location of the source code of the free parts of the SailfishOS is not always evident. I am still investigating this... Especially software offered via http://openrepos.net does not always come with a reference to the source code of provided binary blobs.
Overall impression... If you are a nerd or brave enough otherwise, go and get one!!! Especially if your N900 gradually starts falling apart. Personally, my impression is that the Jolla smartphone is the best of an "up-to-date" Free Software phone, we can get at the moment.
Unfortunately, the complete UIX of Jolla's SailfishOS variant is not published under a free license. Many people demand re-licensing of that code under a free license at the moment. However, in phases of financially restructuring a business (as it is currently happening with Jolla Oy), it is not really possible giving away the main asset (the SailfishOS UIX on Jolla Smartphones) of that company.
So, people waiting for the Sailfish OS core apps become Free Software, probably need to wait some more time. Definitely, the good will is visible.
light+love
Mike
[1] http://sunweavers.net/blog/node/23
[2] http://merproject.org/meetings/mer-meeting/2015/mer-meeting.2015-11-26-1...