What's new in 2.0? Well, everything At least considering code - it's a complete rewrite.
The purpose is still to help facilitate the migration from various platforms to JBoss.
The rules (yes, it's rule-based) are now Java in the core, but some subset can be written in easy XML.
Go and try
If you want to try building it and try write some rule, here's the quick way to get it all (copy and paste one command at time - it uses background wget downloading) :
mkdir tmp; cd tmp/
mkdir windup-lab
cd windup-lab/
## Java 8 download
firefox http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
wget -bc
## NetBeans IDE
wget -bc http://download.netbeans.org/netbeans/8.0.2/final/bundles/netbeans-8.0.2-javase-linux.sh
chmod +x netbeans-8.0.2-javase-linux.sh
bash ./netbeans-8.0.2-javase-linux.sh
## Maven 3.2.5+
mvn -v
wget ftp://mirror.reverse.net/pub/apache/maven/maven-3/3.2.5/binaries/apache-maven-3.2.5-bin.zip
unzip apache-maven-3.2.5-bin.zip
MVN=$PWD/apache-maven-3.2.5/bin/mvn
## Windup
firefox https://github.com/windup/windup
git co git@github.com:windup/windup.git
git clone git@github.com:windup/windup.git windup
cd windup/
mvn install -DskipTests
cd ..
## Windup QuickStarts
firefox https://github.com/windup/windup-quickstarts
git clone git@github.com:windup/windup-quickstarts.git
cd windup-quickstarts/
$MVN install -DskipTests
cd ..
If you don't want to install but want to see it in action, watch our presentation from DevConf Brno: