Quick summary, capital requirements raised from 5 million yen ($30k) to 30 million yen ($200k) and at least 1 full time staff required.
Possible paywall so some quotes
> Currently, applicants can qualify for the visa status by establishing a business in Japan and either investing at least ¥5 million in capital into it or hiring two full-time employees who live in the country. The visa is renewable and allows stays of up to five years each time.
> However, under the revised criteria, the minimum investment requirement for those applying from Thursday will be increased sixfold to ¥30 million.
…
> Applicants will also be required to employ at least one full-time worker who is either a Japanese national or a foreign resident with independent residency status, such as a permanent resident or spouse visa holder.
…
> The government will also be introducing a new language requirement. Either the applicant or a full-time employee must demonstrate business-level Japanese proficiency — approximately CEFR B2 level.
…
> In addition, applicants must prove at least three years of management experience or hold a graduate degree in business administration or a related field, which they were not previously required to do.
Quick summary, capital requirements raised from 5 million yen ($30k) to 30 million yen ($200k) and at least 1 full time staff required.
Possible paywall so some quotes
> Currently, applicants can qualify for the visa status by establishing a business in Japan and either investing at least ¥5 million in capital into it or hiring two full-time employees who live in the country. The visa is renewable and allows stays of up to five years each time.
> However, under the revised criteria, the minimum investment requirement for those applying from Thursday will be increased sixfold to ¥30 million.
…
> Applicants will also be required to employ at least one full-time worker who is either a Japanese national or a foreign resident with independent residency status, such as a permanent resident or spouse visa holder.
…
> The government will also be introducing a new language requirement. Either the applicant or a full-time employee must demonstrate business-level Japanese proficiency — approximately CEFR B2 level.
…
> In addition, applicants must prove at least three years of management experience or hold a graduate degree in business administration or a related field, which they were not previously required to do.
Basically it’s almost impossible for a foreigner to create a start up in Japan now.