For us, this takes Trello from $0 to ~$5000 per year, with roughly one month notice.
The headline doesn't seem to be correct. From the announcement:
>Teams in Trello can be free... free Teams in Trello can have up to 10 open boards, and can upgrade to Business Class or Enterprise for unlimited boards.
Atlassian coming into action. It shows the direction they're picking... not happy with this change for tiny teams
What alternatives does HN prefer?
Favro and Zenkit are great alternatives with an offline mode