According to Individual Computers website, they have begun shipping Amiga 600 memory expansions to Amiga web stores around the world.
The 603-memory expansion features one megabyte of chip-mem, one clockport (yes, what did you expect? this is an Individual Computers product after all 
), a realtime clock and finally the socket for the much awaited ECS version of the Indivision scandoubler/flickerfixer wich will be released later this year.
Wow!
More info on Individual computers website