SyncEvolution is on its way, so stay calm. It is Linux and if there is hardware to sync with then there will be software to sync with! If you are not able to sync your phone via scripts and CLI by hand then you have to wait!
They just did not do a SyncML daemon and SyncEvolution lacks BT support in the pre-build package, so for BT you need to build your own... The device didnt even arrive in Europe properly and you are all about arguing about what nokia should do or leave.
Most of the "normal" phones are with linux based OS but are close to unsyncable with linux sometimes... This is a device to test out what is missing if we add a phone to our NITs... so it be... they did not stop working on it and with the release of M5 it was said that most of the programmers start to implement harmattan (M6) and only some are working on the testing version. If the first answer to some question is "harmattan" then you can guess that they know about but are doing it in Qt4.6 instead of 3.9 or 4.0! I guess thats life! You may swap over to android, buy another phone or just start contributing instead of complaining on every single bit you are missing...

http://syncevolution.org/blogs/pohly...nd-10-released

http://talk.maemo.org/showthread.php?t=37034

PS syncEvolution is (or will be soon) in extras-devel "NOT FOR NORMAL USERS; YOU MAY BRICK YOUR DEVICE!"