Merlin should provide full 64 bit support.
This includes making sure all native platform APIs (JNI, JVMDI, JVMPI, etc)
are well defined at 64 bits, and scrubbing all shared, solaris, and win32
native source code to be 64 bit clean.
The initial delivery of Merlin will include a 64 bit version of the Java
HotSpot(TM) VM implementation for Solaris on Sparc v9.
Support will be added later for Linux on IA-64 and Windows 2000 on IA-64.
Since 64 bit support has as no API visibility, it can be added in maintenace releases.
In all cases the emphasis will be on the Server system. The client system will
eventually be adjusted as well, but the client system is not primarily targeting
systems that require 64 bit addressing (that's why it is a client, after
all). Thus primary focus will be on the server platform.