Tom Scavo writes on gridshib-dev:

Technology Preview 3 of GridShib for GT v0.6.0 introduces some significant new features:

  • A single comprehensive PDP, the GridShibPDP
  • Implementation of a new Attribute Aggregation Algorithm (push + pull)
  • Dual support for both GT4.0 and GT4.1+
  • Improved logging

This is in addition to features already introduced in previous versions of GridShib for GT:

  • Support for both Attribute Push (NEW) and Attribute Pull
  • Blacklisting of IP addresses (NEW)
  • Attribute Mapping
  • Attribute-based Authorization Policy

Read the whole announcement for more details!