As people continue waiting patiently for official news of the Switch 2, Nintendo has taken the unusual step of rolling out a public testing program for a secret new piece of Switch software. It filled up in seconds as players eagerly signed up to be guinea pigs for whatever the Mario maker is cooking up.

Nintendo teases a mysterious new Switch feature that is available for players via the online system on their Nintendo Switch.

Yesterday, Nintendo announced that a Switch Online playtest for some mysterious "new feature" would be accepting sign-ups from October 10 through October 15. At least, that was the plan. Less than seven minutes after those sign-ups went live, Nintendo said they were all filled up.

Nintendo has announced that it's opening applications for a mysterious new Switch Online feature later today, but you'll need an Expansion Pack addon.

The playtest period will last between October 23 and November 5 and those who have an active Nintendo Switch Online + Expansion Pack membership are eligible to sign up. Applicants must also be at least 18 years of age, and have their Nintendo accounts registered in Japan, United States, United Kingdom, France, Germany, Italy, or Spain.

Nintendo has posted a call for 10,000 testers who'll get first access to an unnamed, mysterious Switch Online feature. The whole posting is rather vague and offers no solid clues on what feature it's testing exactly,

As many as 10,000 participants will be allowed to try something new for Switch Online — recruitment opens Thursday morning.

"Customers will need to download exclusive software to their own Nintendo Switch system in order to participate"