3.7.0 - downloaded from:
http://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/indigor

3.7.1 - downloaded from:
http://www.eclipse.org/downloads/packages/eclipse-ide-java-ee-developers/indigosr1

JBT download (Feb 22)
http://download.jboss.org/jbosstools/builds/nightly/trunk/latest/all/jbosstools-3.3_trunk.aggregate-Update-SNAPSHOT.zip

With 3.7.1 - no errors are seen installing the project examples from JBT

With 3.7.0 - this error is raised:

Cannot complete the install because of a conflicting dependency.
Software being installed: Project Examples 1.2.1.v20120221-2359-H574-Beta2 (org.jboss.tools.project.examples.feature.feature.group 1.2.1.v20120221-2359-H574-Beta2)
Software currently installed: Eclipse IDE for Java EE Developers 1.4.0.20110615-0550 (epp.package.jee 1.4.0.20110615-0550)
Only one of the following can be installed at once:
OSGi System Bundle 3.7.1.R37x_v20110808-1106 (org.eclipse.osgi 3.7.1.R37x_v20110808-1106)
OSGi System Bundle 3.7.0.v20110613 (org.eclipse.osgi 3.7.0.v20110613)
Cannot satisfy dependency:
From: Eclipse IDE for Java EE Developers 1.4.0.20110615-0550 (epp.package.jee 1.4.0.20110615-0550)
To: org.eclipse.epp.package.jee.feature.feature.group [1.4.0.20110615-0550]
Cannot satisfy dependency:
From: Java EE IDE Feature 1.4.0.20110615-0550 (org.eclipse.epp.package.jee.feature.feature.group 1.4.0.20110615-0550)
To: org.eclipse.platform.feature.group [3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f]
Cannot satisfy dependency:
From: Java Development Tools Launching Support 3.6.1.v20110803_r371 (org.eclipse.jdt.launching 3.6.1.v20110803_r371)
To: bundle org.eclipse.osgi [3.7.1,4.0.0)
Cannot satisfy dependency:
From: Java Development Tools UI 3.7.1.r371_v20110824-0800 (org.eclipse.jdt.ui 3.7.1.r371_v20110824-0800)
To: bundle org.eclipse.jdt.launching [3.6.1,4.0.0)
Cannot satisfy dependency:
From: Eclipse Platform 3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f (org.eclipse.platform.feature.group 3.7.0.v20110530-9gF7UHNFFt4cwE-pkZDJ7oz-mj4OSEIlu9SEv0f)
To: org.eclipse.rcp.feature.group [3.7.0.v20110216-9DB5Fm1FpBGy_AaVz-mFamgY]
Cannot satisfy dependency:
From: Eclipse RCP 3.7.0.v20110216-9DB5Fm1FpBGy_AaVz-mFamgY (org.eclipse.rcp.feature.group 3.7.0.v20110216-9DB5Fm1FpBGy_AaVz-mFamgY)
To: org.eclipse.osgi [3.7.0.v20110613]
Cannot satisfy dependency:
From: Project Examples 1.2.1.v20120221-2359-H574-Beta2 (org.jboss.tools.project.examples 1.2.1.v20120221-2359-H574-Beta2)
To: bundle org.eclipse.jdt.ui 3.7.1
Cannot satisfy dependency:
From: Project Examples 1.2.1.v20120221-2359-H574-Beta2 (org.jboss.tools.project.examples.feature.feature.group 1.2.1.v20120221-2359-H574-Beta2)
To: org.jboss.tools.project.examples [1.2.1.v20120221-2359-H574-Beta2]