It is still JET, but it should fly even better.
"The next version of Exchange, or E-12, will build on an improved version of Exchange’s current "JET" engine, and surface in the Office 12 time frame, Microsoft executives said this week."
"E-12 … promises voice mail integration, continuous backup, better search, support for WSDL and other Web services specifications, and 64-bit Windows Server."
"Also on the list are security enhancements, including promised ‘Edge Services’ incremental updates, as well as new ‘policy compliance infrastructure.’"
Here is a list of some of the major IT News sources covering this roadmap development:
[Via MS Exchange Blog ]