JGZ: it's fair to say you've completely missed the point all issues.
You're confusing the "ability to upgrade" with actual upgrades. The Omega keeps being touted as wonderous with respect to the former, but has precisely none of the latter.
You're right, the comparison of new machines _isn't_ relevant. The comparison which is, is Acorn's precendent for actually delivering products (and indeed upgrades, which is the topic of this coversation), and which Castle have continued (and ROL, just for completeness).
On the contrary, MD have failed with this on both their machines in timeliness and actual availability, the latter being my objection to your original point. So please refrain comparing upgrades which either don't exist or have only been seen by a precious few with those that are actually available to purchase.