How you do this will depend on your operating system; follow the instructions at http://ryzom.com

We now have access to the current Roadmap ans you'll find explanations about it.
Read on the forum the OFFICIAL NEWS, it announce all the new features
https://bitbucket.org/ryzom/

In short :

Patch 2019: Clients Improvements (as UI-Scale for ex), new bosses, Guild Islands, New rewards at Wheel of Fortune :p
Patch 2018: we can go back to Silan (Patch 3.2.1), ranger rite on the forum...
Patch 2017

Loot lock
added many new stuffs: new chat, better inventory, new Loot Locking System...
From October 2016, all clients migrates from 2.x (and oldiers) to 3.0, with a new installer/patch system.