According to the information in recent Jeff Suwyn's Convergence Presentation (SL-01) on Dynamics-SL V7.0 Feature Pack 1, which will be released sometime in Q4 2008 (by current estimates), the hard close feature is slated to be included. However, the hard close available in FP1 will be global, not module specific. The Ironware solution may still be more practical for many folks who need the flexibility to have a hard close in some modules (e.g. inventory, purchasing, AR) but need a soft close in others (e.g. AP, GL).
Hope this helps.
Best regards,
Gail J-N