WFS 1.1 compliancy
Currently, PROXY only support WFS in its version 1.0
An evolution would be to support the obligatory part of WFS 1.1 specification (http://www.opengeospatial.org/standards/wfs).
WFS 2.0 is also available but, as it is a brand-new spec., it has no need to be integrated in PROXY (no tierce OGC server implement it so far...)
#2 Updated by Mérour Xavier over 8 years ago
Some good news about WFS 2.0.0 :
Negeo and Opengeo will implement WFS 2.0 in Geoserver : http://twitter.com/neogeo_fr/status/58116037694074880
More info about WFS 2.0.0 in french : http://www.neogeo-online.net/blog/archives/561/