Searched for "acml" and found nothing already reported.
2.5.0 includes substantial advantages for most if not all ACML users.
'cp acml-2.1.0.ebuild acml-2.5.0.ebuild' was sufficient to make the upgrade through portage here.
QA: Platform also x86.
Has long been in my overlay, i just forgot to commit it :-/
In CVS now and thanks for the reminder!
Somehow this bug wasn't closed.