Went to my local Sears there was nothing that was mentioned here. No flame red 3DS and no DSi XL just their tags telling me I was too late.
If I had the technical skills...
I'd take a DSi XL's speakers/shell, a 3DS's slot, a GBA SP's slot, and Frankenstein it all together.
You know you'd want a 3DS XL SP! (A 3DS XL that's loud and can play GB/GBC/GBA cartridges.)
How about a 3DS lite? (Cram all the 3DS hardware into a DS lite's shell. Replacing the GBA slot with the SD memory card slot.)
Not that into 3D, so someone else can use their imagination place the 3DS switches somewhere.