What we can see in the timeline in this video (28:58) after C64 in 1982,https://www.youtube.com/watch?v=ICiZbUypMlQ
which was sold over 15.000.000 times, the world awaited a "Super C64" to appear. But this never happened. Commodore has done few attempts, like Plus 4, C128, Amiga and then the PC series.
But it all was not the "Super C64". That probably would have been a C1024 with the same clever "bank-switching" like C64, but everything better: More Ram, 1 MB. more resolution than 320 x 200, "Final Cartridge III" built-in, CBM Basic 3.5 or better. And a HD. That could have been the follower of C64 the world has waited for.
But Commodore has spreaded its energies in many models who all were not what the buyers wanted.
Now its all long over. But BASIC is still alive. :-)