Twitter has introduced new follow and tweet buttons that will replace the ones everyone has gotten used to seeing over the past few years. These buttons are simpler, flatter, and do not have a share count next to them like their predecessors. In order to prevent any third-party developers from creating buttons with Twitter share counts, the social network is closing its share count API.
If a site is not currently displaying Twitter buttons with share counts, there's little that will change on their end. These buttons are the same pixel dimensions as the others.
Twitter still displays follow counts with the follow buttons.
These buttons will arrive next month and begin replacing the old ones on sites that use Twitter's buttons.