KResearch has announced a native Linux version of their free KR-Reverb FS plug in, KVR announcement here:
http://www.kvraudio.com/news/13166.html
Secondly, Loomer have announced a new plugin, String, which is an emulation of old string machines, KVR announcement here:
http://www.kvraudio.com/news/13100.html
I have already tried String, and it is one of the best sounding plugins I've heard for ages. Just in time to go on the Christmas list...
According to the KReasearch download page, they have other Linux VST plugins coming soon as well