Most mention of it has disappeared by now due to linkrot, but there was that sale of refurbs from spare parts back in the mid 2000’s: https://www.engadget.com/2005-12-13-sega-not-re-launching-dreamcast-only-selling-refurbs.html

Give it another year or two, as new mini boards come out and things get back to normal-ish. Evidently, as recently as last year they were saying production costs would still be too high: https://www.destructoid.com/sega-saturn-mini-dreamcast-mini-mega-drive-mini-2-famitsu-interview-retro/