Prompted by a forum post @
WorldOfSpectrum (the post is
here - try opening in a new window), I visited
Sintech while my boss's back was turned. Sure enough, they're currently taking pre-orders for the MB03+, the successor to the MB02+. It's "512 K SRAM, 32K Flash Rom, PS/2 Mouse & Keyboard support, Smart-Card-Reader, IDE-Support"...
That's all there is in the way of details, and if you look at the product page it states that "... it is not clear, if the MB03+ will be finished." The price is about what I paid for my MB02+ (around £200), likely to get cheaper the more people who pre-order it, with 50 pre-orders being the minimum required to make it worthwhile. Having just bought a house, one of those people won't be me, sadly. Unless they decide to offer a trade-in scheme.
I may decide to invest in one of those VGA convertors, tho'. Hmm.