Why no x64 Domino for 64-bit Linux x86

This might be a silly question but why has IBM not released a 64-bit version of Domino for Linux?

What potential benefits do I lose out on by installing the 32-bit version of Domino on 64-bit SLES.

Thanks for your patience

Steve

Subject: This is targeted in next major release of Domino

FYI on the following also.

http://www.ibm.com/support/docview.wss?rs=899&uid=swg21296452