The announcements were made by a new non-profit foundation that is taking over the educational project, formerly led by the BBC.
About one million of the devices were given away free to UK-based schoolchildren earlier this year.
The BBC says they encourage children, especially girls, to code
Beyond the UK, Micro Bits are also in use in schools across the Netherlands and Iceland. But the foundation now intends to co-ordinate a wider rollout.
The foundation’s new chief executive Zach Shelby said the goal is to reach 100 million people with Micro Bit.
“That means [selling] tens of millions of devices… over the next five to 10 years.”
Micro Bits will be available across Europe before the end of the year and currently the outfit is developing Norwegian and Dutch-language versions of its coding web tools to boost demand.
Next year the foundation will target North America and China, which will coincide with an upgrade to the hardware with a more powerful chip and better sensors.
Micro Bits currently sell for about £13, excluding the batteries needed to power them.